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北师大版 (2019)选择性必修 第三册Lesson 3 Epidemics Explained背景图ppt课件
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这是一份北师大版 (2019)选择性必修 第三册Lesson 3 Epidemics Explained背景图ppt课件，文件包含UNIT9Period6pptx、UNIT9Period6DOC等2份课件配套教学资源，其中PPT共60页， 欢迎下载使用。
1．suspect n._________________________2．symblically adv._________________________3．phenmenn n.________________________4．mineral n._________________________
(犯罪)嫌疑人，可疑分子 象征地，象征性地 现象 矿物质；矿产
5．needle n.__________________________________6．database n.__________________________________7．victim n.__________________________________8．astrnmer n.__________________________________
针 数据库，资料库 (袭击事件、抢劫事件或凶杀案的)受害者 天文学家
1．g dwn________________2．nte dwn________________3．result frm________________4．flw thrugh________________5．with the develpment f…________________
下降 写下 由于 流经 随着……的发展
6．figure ut_________________________7．track dwn________________8．prevent sb. frm ding sth.________________9．perfrm a task________________10．wrk thrugh________________11．as t________________
想出；算出；理解，明白 追捕；找到 阻止某人做某事 执行一项任务 完成；解决 关于，至于
12．一场激烈的讨论________________13．被……包围________________14．怀疑某人做了某事________________15．在某人回家的路上________________16．属于________________
a heated debate be surrunded by… suspect sb. f ding sth. n ne’s way hme belng t
17．好好利用________________18．增加摄入量________________19．保持大脑灵活________________20．对……构成威胁________________
make gd use f increase the intake keep the brain flexible pse a threat t…
1．(P67)________ ________ the mther’s DNA ________ is passed n intact t her child. (强调句型)【答案】It is; that
2．(P68)________ ________ they wanted t break this technical barrier was ________(原因是)mnkey clning might ffer clues as t hw t cure illness and disease. (the reasn…is that…)【答案】The reasn; that
3．(P68)________(尽管)sme peple see clning as crucial fr medical and scientific develpment, thers have ethical cncerns abut hw it culd be used. (while引导让步状语从句)【答案】While
4．(P68)________ it is a blessing ________(是……还是……) a curse fr humanity remains t be seen and depends n hw we chse t use it. (whether…r…)【答案】Whether; r
5．(P68)________(随着)the technlgy imprves and becmes mre accurate there wuld be even greater benefits. (as引导时间状语从句)【答案】As
1．debate n. &vi. 辩论，争论(P64)In this TV prgramme tw participants have a debate n this issue. 【翻译】在这个电视节目中，两位参与者就这个问题进行了辩论。
【语言提升】a heated debate 一场激烈的辩论This phenmenn aruses a heated debate in the sciety. 这个现象引发了社会上的热议。
under debate在辩论中One f the questins under debate is whether a persn shuld chse cmfrtable clthes regardless f fashin. 其中一个问题就是一个人是否应选择舒适的衣服，而不管是否时尚。
debate with sb. abut/ver/n sth. 就某事与某人辩论She ften debates with classmates abut the meaning f “happiness”. 她经常和同学辩论“快乐”的意义。debater n. 讨论者，争论者；辩论家
【归纳拓展】“under＋n. ”的结构还有：under discussin在讨论中under cnsideratin在考虑中under cnstructin在建设中under attack受到攻击under arrest被逮捕
【针对练习】单句语法填空(1)One f the questins ________ debate is whether educatin is a lifetime study. (2)The girl is ________(debate)with her brther n where t have a picnic.
完成句子(3)The teacher’s wrds set ff ________ ________ ________. 老师的话引起了一场热烈的辩论。【答案】(1)under (2)debating (3)a heated debate
2．surrund vt. 包围；围绕 (P64)Tina Thmas ans Simn Bwden are debating the issues surrunding animal experiments. 【翻译】蒂娜·托马斯和西蒙·鲍登正在围绕着动物实验展开辩论。
【语言提升】surrund…with… 用……包围……Surrund yurself with uplifting individuals wh challenge yu t be better. 让自己周围的人都能激励你，让你变得更好。be surrunded by/with… 被……包围The huse was surrunded by an electrified fence. 该房子四周布有带电栅栏。
surrunding adj. 周围的Life quality is clsely linked t surrunding envirnment. 生活质量与周围环境紧密相关。surrundings n. 环境；周围的事物He was an expert at finding his way, even in strange surrundings. 他是个找路的高手，即使在陌生的环境中也一样。
【针对练习】单句语法填空(1)Visitrs have the feeling f walking in the desert ________(surrund)by native plants and wildlife. (2)It attracts travelers t cme ver t cycle and walk thrugh the ________(surrund)frests. (3)Her sn Peter adapted effrtlessly t his new ________ (surrunding). 【答案】(1)surrunded (2)surrunding (3)surrundings
完成句子(4)When the car stpped in the twn square it ________ ________ ________ sldiers. 当这辆车在城镇广场停下时，就被战士们包围了。【答案】(4)was surrunded by/with
3．preventin n. 阻止；预防 (P65)It has develped a unique cmbinatin f treatments related t helping well-being and the preventin and treatment f diseases. 【翻译】它开发了一种独特的结合治疗方法，既能帮助健康，又能预防和治疗疾病。
【语言提升】preventin n. 阻止；预防Stres spend mre and mre n crime preventin every year. 商店每年在防止犯罪方面的花费越来越多。prevent vt. 阻止；预防prevent sb. (frm)ding sth. 阻止某人做某事Further treatment will prevent cancer frm develping. 进一步治疗将预防癌症恶化。
preventive adj. 预防的；防病的This accident serves t shw the imprtance f taking preventive measures. 这次事故说明了采取预防措施的重要性。
【归纳拓展】“阻止某人做某事”的表达方式：stp sb. (frm)ding sth. keep sb. frm ding sth. discurage sb. frm ding sth.
【针对练习】单句语法填空(1)Educatin wuld be the best and final ________(prevent) against scial evils. (2)T much is spent n curative medicine and t little n ________(prevent)medicine. 【答案】(1)preventin (2)preventive
(3)He said this wuld prevent cmpanies frm ________ (create) new jbs. (4)We hpe t keep anything unpleasant ________ happening. 【答案】(3)creating (4)frm
4．perfrm vt. &vi. 表演；表现；执行(P65)Qi, a vital energy that flws thrugh the bdy, perfrms multiple functins in maintaining health. 【翻译】气是流经身体的一种重要的能量，在维持健康方面起着多种作用。
【语言提升】perfrm vt. 执行；完成；演奏vi. 执行；机器运转；表演(过去式 perfrmed; 过去分词 perfrmed; 现在分词 perfrming；第三人称单数 perfrms)perfrm well/badly表现好/不好They felt cntinual pressure t perfrm well. 他们感受到持续不断的、要表演得好的压力。
perfrm an experiment/an peratin/a miracle做实验/做手术/创造奇迹It’s extremely cruel t perfrm an experiment n live animals. 对动物活体进行实验是一件极其残忍的事情。
perfrmance n. 表演；表现put n/give a perfrmance进行表演Tm used t be very shy, but this time he was brave enugh t give a perfrmance in frnt f a large audience. 汤姆过去很腼腆，但这次却非常勇敢能在大庭广众面前上台表演。
perfrmer n. 表演者；执行者He was recgnized as the utstanding perfrmer f the games. 他被评选为这次运动会表现最出色的运动员。
【针对练习】单句语法填空(1)He has given an impressive ________(perfrm)at the party. (2)A ________(perfrm)plays classical selectins n the vilin. 【答案】(1)perfrmance (2)perfrmer
完成句子(3)Students in pssessin f gd time-management skills are mre likely ________ ________ ________ in universities. 拥有良好的时间管理技巧的学生更可能在大学有好的表现。
(4)The dctr said that he wuld ________ ________ ________ fr my mther the next Mnday. 医生说，他下星期一给我母亲做手术。【答案】(3)t perfrm well (4)perfrm an peratin
5．figure ut解决；想出；理解；算出；断定 (P66)Fr example, DNA detectives can figure ut a persn’s identity and hw peple were related. 【翻译】例如，DNA侦探可以查明一个人的身份以及他们之间的关系。
【语言提升】I can’t figure ut why he did s. 我弄不明白他为什么这样做Figure ut hw much yu’ll save every mnth. 计算一下你每个月将存多少钱。
figure n. 身材；画像；人物；数字；轮廓keep ne’s figure保持身材He has becme a figure well-knwn t everyne. 他已成了一个家喻户晓的人物。Hw des she manage t keep her figure when she eats s much?她吃得这么多，究竟是怎样保持身材的？
figure vt. 认为She figured that bth she and Ned had learned a lt frm the experience. 她认为她和奈德都从这次经历中学到了很多。
【针对练习】单句语法填空(1)(2020年全国Ⅱ卷)When yu were trying t figure ________ what t buy fr the envirnmentalist n yur hliday list, fur prbably didn’t crss yur mind. 根据语境选出figure的词性和词义A．n. 身材B．n. 画像C．n. 人物D．n. 数字E．vt. 认为
(2)Being a public figure tday, hwever, is a lt mre difficult than it used t be. ________(3)I need actual figures, nt estimated nes. ________(4)The girl is careful t chse her fd because she wants very much t keep her figure. ________(5)There is a figure f an angel n the cin. ________(6)She figured that they had learned a lt frm the experience. ________【答案】(1)ut (2)C (3)D (4)A (5)B (6)E
6．suspect n. (犯罪)嫌疑人，可疑分子(P66)The DNA is stred in a database, where plicemen can find the same r similar DNA t track dwn suspects and victims. 【翻译】DNA被储存在数据库中，警察可以在数据库中找到相同或相似的DNA来追踪嫌疑人和受害者。
【语言提升】suspect n. 嫌疑犯 ；犯罪嫌疑人Pictures f the suspect were published in all the daily papers. 嫌疑人的照片刊登在各家日报上了。suspect vt. 怀疑，认为The abve cmplaints are, I suspect, just the tip f the iceberg. 上述的这些抱怨，我认为，不过是冰山的一角。
suspect sb. f (ding)sth. 怀疑某人(做)了某事He resigned after being suspected f theft. 他被怀疑有偷窃行为，随后就辞职了。suspicius adj. 怀疑的，可疑的Plice are warning the public t be n the alert fr suspicius packages. 警方警告公众要警惕可疑包裹。
【归纳拓展】infrm sb. f sth. 告知某人某事remind sb. f sth. 提醒某人某事；使某人想起某事warn sb. f sth. 警告某人某事cnvince sb. f sth. 使某人相信某事cheat sb. f sth. 骗取某人某物
【针对练习】单句语法填空(1)________(suspect)must be cautined befre any questins are asked. (2)Many fds are suspected ________ being harmful t health because f the chemicals and additives they cntain. (3)They became ________(suspect)f his behaviur and cntacted the plice. 【答案】(1)Suspects (2)f (3)suspicius
完成句子(4)Yu ________ ________ ________ yur father when yu say that. 你说这样的话，使我想起了你的父亲。【答案】remind me f
1．(P68)The reasn they wanted t break this technical barrier was that mnkey clning might ffer clues as t hw t cure illness and disease. 【翻译】他们想要突破这一技术障碍的原因是，克隆猴子可能为治愈疾病提供线索。【句式剖析】本句中the reasn为句子的主语，that引导表语从句。
【归纳拓展】The reasn (why/fr…)is that… ……的原因是……The reasn why the students favr the bk is that they can carry it wherever they g. 学生们喜欢这本书的原因是他们无论去哪都可以随身携带它。The reasn fr being late was that he gt up late. 迟到的原因是他起床晚了。
It/This/That is because… 这/那是因为…… (because后接原因)Frm space, the earth lks blue. This is because abut seventy-ne percent f its surface is cvered by water. 从太空中看，地球是蓝色的。这是因为它表面约71%都被水覆盖着。
It/This/That is why…这/那就是……的原因(why后接结果)The deadline is drawing near. That is why we are very busy. 最后期限要到了。这就是我们很忙的原因。
【针对练习】单句语法填空(1)He fell asleep during the lecture. This was ________ he gt bred with it. (2)The reasn ________ he missed the bus was that he gt up late. (3)He failed the exam again. The reasn was ________ he was t careless. 【答案】(1)because (2)why (3)that
完成句子(4)He admitted that his father was strict with him. ________ ________ he made s many achievements. 他承认他父亲对他严格。那就是为什么他取得如此多的成就。(5)________ ________ ________ he is s brilliant is ________ he has read many bks. 他如此才华横溢是因为他读了很多书。【答案】(4)That’s why (5)The reasn why; that
2．(P68)While sme peple see clning as crucial fr medical and scientific develpment, thers have ethical cncerns abut hw it culd be used. 【翻译】尽管一些人认为克隆对医学和科学发展至关重要，而另一些人则对如何使用它产生伦理上的担忧。【句式剖析】本句中while为连词，翻译为“虽然；尽管”，相当于althugh或thugh。
【归纳拓展】while作连词时，有如下释义：(1)当……时候；和……同时While we were swimming in the river, we saw a fish jump ut f the water. 当我们正在河中游泳时，看见一条鱼跃出了水面。
(2)虽然；尽管While I see what yu say, I can’t agree with yu. 虽然我能理解你说的话，但是我不能同意你。(3)(表示对比)然而That seasn, I brke all f Miller’s recrds while he watched the hme games frm the bench. 那个赛季，我打破了米列尔的所有记录，然而他却坐在长凳上观看主场比赛。
【特别提醒】while还可用作名词，意为“一段时间”，常见搭配为fr a while(一会)；after a while(一段时间之后)。
【针对练习】写出下列句中while的含义(1)While the students came frm different cuntries, they gt alng quite well in the summer camp. ________(2)Tw years ag, while Cathy was watching the Olympics, a dream came int her sweet little head-t be a swimmer. ________【答案】(1)虽然；尽管 (2)当……时候
(3)There’s n way f knwing why ne man makes an imprtant discvery while anther man, als intelligent, fails. ________(4)They walked n in silence fr a while. ________【答案】(3)然而 (4)一段时间
3．(P68)Whether it is a blessing r a curse fr humanity remains t be seen and depends n hw we chse t use it. 【翻译】它对人类是福还是祸还有待观察，取决于我们选择如何使用它。【句式剖析】本句中的whether…r…意为“是……还是……”，引导主语从句。
【归纳拓展】whether…r…引导让步状语从句，意为“无论……还是……，不管……还是……”。Whether it’s sunny r rainy, Delta ges jgging alng the lake every mrning. 无论是晴天还是雨天，德尔塔每天早上都沿着湖边慢跑。
whether…r…引导名词性从句，意为“是……还是……，或者……或者……”。T this day, it’s unclear whether he sht himself r was murdered. 至今尚不清楚他究竟是自杀还是被谋杀。 (主语从句)The nly remaining prblem is whether we can cllect enugh mney r nt. 剩下的唯一问题是我们能否筹集到足够的钱。(表语从句)
whether…r…后跟名词、代词、介词短语或不定式短语，意为“无论……还是……，不管……还是……，是……还是……”。Yu’ll have t chse whether t buy it r nt. 买还是不买，你得做出选择。
【针对练习】单句语法填空(1)Mrs. King desn’t knw whether her sn is in Paris ________ in New Yrk. (2)________ Tm wins r lses, this is his last chance. 【答案】(1)r (2)Whether
完成句子(3)________ ________ ________ ________ ________, I will marry him. 无论他是贫穷还是富有，我都会嫁给他。【答案】(3)Whether he’s pr r rich
一、单词拼写1．It’s an interesting scientific ________(现象), but f n practical use. 2．The cmmittee will ________(争论)whether t lwer dwn the age f club membership t 16．3．Plice ________(怀疑)there may be a link between the tw murders. 【答案】1．phenmenn 2．debate 3．suspectz
4．T make members f a team ________(表现)better, the trainer, first f all, has t knw their strengths and weaknesses. 5．It was a simple enugh gesture, but ________(象征地)imprtant. 6．She was a(n)________(天文学家)t help wrk n the prject. 【答案】4．perfrm 5．symblically 6．astrnmer
7．He likes t ________(包围)himself with amusing peple. 8．The best ________(预防)fr chlera is t bil r filter water, and eat nly well-cked fd. 9．The cuntry pssesses rich ________(矿产)resurces. 10．The ________(数据库)culd be used as a teaching resurce in clleges. 【答案】7．surrund 8．preventin 9．mineral 10．database
二、单句语法填空1．She ________(debate)with herself fr a while, and then picked up the phne. 2．T deal with this prblem, it is recmmended that a big part f the gvernment’s health budget shuld be used fr health educatin and disease ________(prevent). 【答案】1．debated 2．preventin
3．He praised his team fr their excellent ________(perfrm). 4．I’ve had hundreds f calls frm ther ________(victim). 5．Hw then d we make sense f these ________ (phenmenn)? 6．These rings are the symbl f lng-lasting and pure lve f lvers, and it will ________(symblical)tie the relatinship frever. 【答案】3．perfrmance 4．victims 5．phenmena 6．symblically
7．I think we shuld figure ________ sme ways t stp peple frm plluting the river and call n them t fight against pllutin. 8．Wh has taught yu t take things that d nt belng ________ yu?【答案】7．ut 8．t
9．Yu shuld make gd use ________ this rare pprtunity. 10．Shrtly afterward, plice arrested(逮捕)fur ________ (suspect). 【答案】9．f 10．suspects
三、完成句子1．The reasn ________ ________ ________ ________ ________ he depends n thers t much. 他失败的原因是他太依赖别人了。【答案】why he failed is that
2．________ ________ ________ ________ ________ ________, he went t schl as usual. 虽然他发高烧，但他像往常一样去上学了。【答案】While/Thugh/Althugh he had a high fever
3．________ ________ ________ ________ ________ ________, every family will clean their huses frm tp t bttm. 随着春节的临近，家家户户都会彻底打扫房屋。 【答案】As the Spring Festival is appraching
4．________ ________ in the park ________ her bag was rbbed by a yung man. 就是在公园里，她的包被一个年轻人抢了。【答案】It was; that
5．The earth became s vilent that it was nt clear ________ the shape wuld last ________ ________. 地球变得如此激烈动荡以至于不知道这个固体形状是否会继续存在下去。【答案】whether; r nt
1．suspect n._________________________2．symblically adv._________________________3．phenmenn n.________________________4．mineral n._________________________
(犯罪)嫌疑人，可疑分子 象征地，象征性地 现象 矿物质；矿产
5．needle n.__________________________________6．database n.__________________________________7．victim n.__________________________________8．astrnmer n.__________________________________
针 数据库，资料库 (袭击事件、抢劫事件或凶杀案的)受害者 天文学家
1．g dwn________________2．nte dwn________________3．result frm________________4．flw thrugh________________5．with the develpment f…________________
下降 写下 由于 流经 随着……的发展
6．figure ut_________________________7．track dwn________________8．prevent sb. frm ding sth.________________9．perfrm a task________________10．wrk thrugh________________11．as t________________
想出；算出；理解，明白 追捕；找到 阻止某人做某事 执行一项任务 完成；解决 关于，至于
12．一场激烈的讨论________________13．被……包围________________14．怀疑某人做了某事________________15．在某人回家的路上________________16．属于________________
a heated debate be surrunded by… suspect sb. f ding sth. n ne’s way hme belng t
17．好好利用________________18．增加摄入量________________19．保持大脑灵活________________20．对……构成威胁________________
make gd use f increase the intake keep the brain flexible pse a threat t…
1．(P67)________ ________ the mther’s DNA ________ is passed n intact t her child. (强调句型)【答案】It is; that
2．(P68)________ ________ they wanted t break this technical barrier was ________(原因是)mnkey clning might ffer clues as t hw t cure illness and disease. (the reasn…is that…)【答案】The reasn; that
3．(P68)________(尽管)sme peple see clning as crucial fr medical and scientific develpment, thers have ethical cncerns abut hw it culd be used. (while引导让步状语从句)【答案】While
4．(P68)________ it is a blessing ________(是……还是……) a curse fr humanity remains t be seen and depends n hw we chse t use it. (whether…r…)【答案】Whether; r
5．(P68)________(随着)the technlgy imprves and becmes mre accurate there wuld be even greater benefits. (as引导时间状语从句)【答案】As
1．debate n. &vi. 辩论，争论(P64)In this TV prgramme tw participants have a debate n this issue. 【翻译】在这个电视节目中，两位参与者就这个问题进行了辩论。
【语言提升】a heated debate 一场激烈的辩论This phenmenn aruses a heated debate in the sciety. 这个现象引发了社会上的热议。
under debate在辩论中One f the questins under debate is whether a persn shuld chse cmfrtable clthes regardless f fashin. 其中一个问题就是一个人是否应选择舒适的衣服，而不管是否时尚。
debate with sb. abut/ver/n sth. 就某事与某人辩论She ften debates with classmates abut the meaning f “happiness”. 她经常和同学辩论“快乐”的意义。debater n. 讨论者，争论者；辩论家
【归纳拓展】“under＋n. ”的结构还有：under discussin在讨论中under cnsideratin在考虑中under cnstructin在建设中under attack受到攻击under arrest被逮捕
【针对练习】单句语法填空(1)One f the questins ________ debate is whether educatin is a lifetime study. (2)The girl is ________(debate)with her brther n where t have a picnic.
完成句子(3)The teacher’s wrds set ff ________ ________ ________. 老师的话引起了一场热烈的辩论。【答案】(1)under (2)debating (3)a heated debate
2．surrund vt. 包围；围绕 (P64)Tina Thmas ans Simn Bwden are debating the issues surrunding animal experiments. 【翻译】蒂娜·托马斯和西蒙·鲍登正在围绕着动物实验展开辩论。
【语言提升】surrund…with… 用……包围……Surrund yurself with uplifting individuals wh challenge yu t be better. 让自己周围的人都能激励你，让你变得更好。be surrunded by/with… 被……包围The huse was surrunded by an electrified fence. 该房子四周布有带电栅栏。
surrunding adj. 周围的Life quality is clsely linked t surrunding envirnment. 生活质量与周围环境紧密相关。surrundings n. 环境；周围的事物He was an expert at finding his way, even in strange surrundings. 他是个找路的高手，即使在陌生的环境中也一样。
【针对练习】单句语法填空(1)Visitrs have the feeling f walking in the desert ________(surrund)by native plants and wildlife. (2)It attracts travelers t cme ver t cycle and walk thrugh the ________(surrund)frests. (3)Her sn Peter adapted effrtlessly t his new ________ (surrunding). 【答案】(1)surrunded (2)surrunding (3)surrundings
完成句子(4)When the car stpped in the twn square it ________ ________ ________ sldiers. 当这辆车在城镇广场停下时，就被战士们包围了。【答案】(4)was surrunded by/with
3．preventin n. 阻止；预防 (P65)It has develped a unique cmbinatin f treatments related t helping well-being and the preventin and treatment f diseases. 【翻译】它开发了一种独特的结合治疗方法，既能帮助健康，又能预防和治疗疾病。
【语言提升】preventin n. 阻止；预防Stres spend mre and mre n crime preventin every year. 商店每年在防止犯罪方面的花费越来越多。prevent vt. 阻止；预防prevent sb. (frm)ding sth. 阻止某人做某事Further treatment will prevent cancer frm develping. 进一步治疗将预防癌症恶化。
preventive adj. 预防的；防病的This accident serves t shw the imprtance f taking preventive measures. 这次事故说明了采取预防措施的重要性。
【归纳拓展】“阻止某人做某事”的表达方式：stp sb. (frm)ding sth. keep sb. frm ding sth. discurage sb. frm ding sth.
【针对练习】单句语法填空(1)Educatin wuld be the best and final ________(prevent) against scial evils. (2)T much is spent n curative medicine and t little n ________(prevent)medicine. 【答案】(1)preventin (2)preventive
(3)He said this wuld prevent cmpanies frm ________ (create) new jbs. (4)We hpe t keep anything unpleasant ________ happening. 【答案】(3)creating (4)frm
4．perfrm vt. &vi. 表演；表现；执行(P65)Qi, a vital energy that flws thrugh the bdy, perfrms multiple functins in maintaining health. 【翻译】气是流经身体的一种重要的能量，在维持健康方面起着多种作用。
【语言提升】perfrm vt. 执行；完成；演奏vi. 执行；机器运转；表演(过去式 perfrmed; 过去分词 perfrmed; 现在分词 perfrming；第三人称单数 perfrms)perfrm well/badly表现好/不好They felt cntinual pressure t perfrm well. 他们感受到持续不断的、要表演得好的压力。
perfrm an experiment/an peratin/a miracle做实验/做手术/创造奇迹It’s extremely cruel t perfrm an experiment n live animals. 对动物活体进行实验是一件极其残忍的事情。
perfrmance n. 表演；表现put n/give a perfrmance进行表演Tm used t be very shy, but this time he was brave enugh t give a perfrmance in frnt f a large audience. 汤姆过去很腼腆，但这次却非常勇敢能在大庭广众面前上台表演。
perfrmer n. 表演者；执行者He was recgnized as the utstanding perfrmer f the games. 他被评选为这次运动会表现最出色的运动员。
【针对练习】单句语法填空(1)He has given an impressive ________(perfrm)at the party. (2)A ________(perfrm)plays classical selectins n the vilin. 【答案】(1)perfrmance (2)perfrmer
完成句子(3)Students in pssessin f gd time-management skills are mre likely ________ ________ ________ in universities. 拥有良好的时间管理技巧的学生更可能在大学有好的表现。
(4)The dctr said that he wuld ________ ________ ________ fr my mther the next Mnday. 医生说，他下星期一给我母亲做手术。【答案】(3)t perfrm well (4)perfrm an peratin
5．figure ut解决；想出；理解；算出；断定 (P66)Fr example, DNA detectives can figure ut a persn’s identity and hw peple were related. 【翻译】例如，DNA侦探可以查明一个人的身份以及他们之间的关系。
【语言提升】I can’t figure ut why he did s. 我弄不明白他为什么这样做Figure ut hw much yu’ll save every mnth. 计算一下你每个月将存多少钱。
figure n. 身材；画像；人物；数字；轮廓keep ne’s figure保持身材He has becme a figure well-knwn t everyne. 他已成了一个家喻户晓的人物。Hw des she manage t keep her figure when she eats s much?她吃得这么多，究竟是怎样保持身材的？
figure vt. 认为She figured that bth she and Ned had learned a lt frm the experience. 她认为她和奈德都从这次经历中学到了很多。
【针对练习】单句语法填空(1)(2020年全国Ⅱ卷)When yu were trying t figure ________ what t buy fr the envirnmentalist n yur hliday list, fur prbably didn’t crss yur mind. 根据语境选出figure的词性和词义A．n. 身材B．n. 画像C．n. 人物D．n. 数字E．vt. 认为
(2)Being a public figure tday, hwever, is a lt mre difficult than it used t be. ________(3)I need actual figures, nt estimated nes. ________(4)The girl is careful t chse her fd because she wants very much t keep her figure. ________(5)There is a figure f an angel n the cin. ________(6)She figured that they had learned a lt frm the experience. ________【答案】(1)ut (2)C (3)D (4)A (5)B (6)E
6．suspect n. (犯罪)嫌疑人，可疑分子(P66)The DNA is stred in a database, where plicemen can find the same r similar DNA t track dwn suspects and victims. 【翻译】DNA被储存在数据库中，警察可以在数据库中找到相同或相似的DNA来追踪嫌疑人和受害者。
【语言提升】suspect n. 嫌疑犯 ；犯罪嫌疑人Pictures f the suspect were published in all the daily papers. 嫌疑人的照片刊登在各家日报上了。suspect vt. 怀疑，认为The abve cmplaints are, I suspect, just the tip f the iceberg. 上述的这些抱怨，我认为，不过是冰山的一角。
suspect sb. f (ding)sth. 怀疑某人(做)了某事He resigned after being suspected f theft. 他被怀疑有偷窃行为，随后就辞职了。suspicius adj. 怀疑的，可疑的Plice are warning the public t be n the alert fr suspicius packages. 警方警告公众要警惕可疑包裹。
【归纳拓展】infrm sb. f sth. 告知某人某事remind sb. f sth. 提醒某人某事；使某人想起某事warn sb. f sth. 警告某人某事cnvince sb. f sth. 使某人相信某事cheat sb. f sth. 骗取某人某物
【针对练习】单句语法填空(1)________(suspect)must be cautined befre any questins are asked. (2)Many fds are suspected ________ being harmful t health because f the chemicals and additives they cntain. (3)They became ________(suspect)f his behaviur and cntacted the plice. 【答案】(1)Suspects (2)f (3)suspicius
完成句子(4)Yu ________ ________ ________ yur father when yu say that. 你说这样的话，使我想起了你的父亲。【答案】remind me f
1．(P68)The reasn they wanted t break this technical barrier was that mnkey clning might ffer clues as t hw t cure illness and disease. 【翻译】他们想要突破这一技术障碍的原因是，克隆猴子可能为治愈疾病提供线索。【句式剖析】本句中the reasn为句子的主语，that引导表语从句。
【归纳拓展】The reasn (why/fr…)is that… ……的原因是……The reasn why the students favr the bk is that they can carry it wherever they g. 学生们喜欢这本书的原因是他们无论去哪都可以随身携带它。The reasn fr being late was that he gt up late. 迟到的原因是他起床晚了。
It/This/That is because… 这/那是因为…… (because后接原因)Frm space, the earth lks blue. This is because abut seventy-ne percent f its surface is cvered by water. 从太空中看，地球是蓝色的。这是因为它表面约71%都被水覆盖着。
It/This/That is why…这/那就是……的原因(why后接结果)The deadline is drawing near. That is why we are very busy. 最后期限要到了。这就是我们很忙的原因。
【针对练习】单句语法填空(1)He fell asleep during the lecture. This was ________ he gt bred with it. (2)The reasn ________ he missed the bus was that he gt up late. (3)He failed the exam again. The reasn was ________ he was t careless. 【答案】(1)because (2)why (3)that
完成句子(4)He admitted that his father was strict with him. ________ ________ he made s many achievements. 他承认他父亲对他严格。那就是为什么他取得如此多的成就。(5)________ ________ ________ he is s brilliant is ________ he has read many bks. 他如此才华横溢是因为他读了很多书。【答案】(4)That’s why (5)The reasn why; that
2．(P68)While sme peple see clning as crucial fr medical and scientific develpment, thers have ethical cncerns abut hw it culd be used. 【翻译】尽管一些人认为克隆对医学和科学发展至关重要，而另一些人则对如何使用它产生伦理上的担忧。【句式剖析】本句中while为连词，翻译为“虽然；尽管”，相当于althugh或thugh。
【归纳拓展】while作连词时，有如下释义：(1)当……时候；和……同时While we were swimming in the river, we saw a fish jump ut f the water. 当我们正在河中游泳时，看见一条鱼跃出了水面。
(2)虽然；尽管While I see what yu say, I can’t agree with yu. 虽然我能理解你说的话，但是我不能同意你。(3)(表示对比)然而That seasn, I brke all f Miller’s recrds while he watched the hme games frm the bench. 那个赛季，我打破了米列尔的所有记录，然而他却坐在长凳上观看主场比赛。
【特别提醒】while还可用作名词，意为“一段时间”，常见搭配为fr a while(一会)；after a while(一段时间之后)。
【针对练习】写出下列句中while的含义(1)While the students came frm different cuntries, they gt alng quite well in the summer camp. ________(2)Tw years ag, while Cathy was watching the Olympics, a dream came int her sweet little head-t be a swimmer. ________【答案】(1)虽然；尽管 (2)当……时候
(3)There’s n way f knwing why ne man makes an imprtant discvery while anther man, als intelligent, fails. ________(4)They walked n in silence fr a while. ________【答案】(3)然而 (4)一段时间
3．(P68)Whether it is a blessing r a curse fr humanity remains t be seen and depends n hw we chse t use it. 【翻译】它对人类是福还是祸还有待观察，取决于我们选择如何使用它。【句式剖析】本句中的whether…r…意为“是……还是……”，引导主语从句。
【归纳拓展】whether…r…引导让步状语从句，意为“无论……还是……，不管……还是……”。Whether it’s sunny r rainy, Delta ges jgging alng the lake every mrning. 无论是晴天还是雨天，德尔塔每天早上都沿着湖边慢跑。
whether…r…引导名词性从句，意为“是……还是……，或者……或者……”。T this day, it’s unclear whether he sht himself r was murdered. 至今尚不清楚他究竟是自杀还是被谋杀。 (主语从句)The nly remaining prblem is whether we can cllect enugh mney r nt. 剩下的唯一问题是我们能否筹集到足够的钱。(表语从句)
whether…r…后跟名词、代词、介词短语或不定式短语，意为“无论……还是……，不管……还是……，是……还是……”。Yu’ll have t chse whether t buy it r nt. 买还是不买，你得做出选择。
【针对练习】单句语法填空(1)Mrs. King desn’t knw whether her sn is in Paris ________ in New Yrk. (2)________ Tm wins r lses, this is his last chance. 【答案】(1)r (2)Whether
完成句子(3)________ ________ ________ ________ ________, I will marry him. 无论他是贫穷还是富有，我都会嫁给他。【答案】(3)Whether he’s pr r rich
一、单词拼写1．It’s an interesting scientific ________(现象), but f n practical use. 2．The cmmittee will ________(争论)whether t lwer dwn the age f club membership t 16．3．Plice ________(怀疑)there may be a link between the tw murders. 【答案】1．phenmenn 2．debate 3．suspectz
4．T make members f a team ________(表现)better, the trainer, first f all, has t knw their strengths and weaknesses. 5．It was a simple enugh gesture, but ________(象征地)imprtant. 6．She was a(n)________(天文学家)t help wrk n the prject. 【答案】4．perfrm 5．symblically 6．astrnmer
7．He likes t ________(包围)himself with amusing peple. 8．The best ________(预防)fr chlera is t bil r filter water, and eat nly well-cked fd. 9．The cuntry pssesses rich ________(矿产)resurces. 10．The ________(数据库)culd be used as a teaching resurce in clleges. 【答案】7．surrund 8．preventin 9．mineral 10．database
二、单句语法填空1．She ________(debate)with herself fr a while, and then picked up the phne. 2．T deal with this prblem, it is recmmended that a big part f the gvernment’s health budget shuld be used fr health educatin and disease ________(prevent). 【答案】1．debated 2．preventin
3．He praised his team fr their excellent ________(perfrm). 4．I’ve had hundreds f calls frm ther ________(victim). 5．Hw then d we make sense f these ________ (phenmenn)? 6．These rings are the symbl f lng-lasting and pure lve f lvers, and it will ________(symblical)tie the relatinship frever. 【答案】3．perfrmance 4．victims 5．phenmena 6．symblically
7．I think we shuld figure ________ sme ways t stp peple frm plluting the river and call n them t fight against pllutin. 8．Wh has taught yu t take things that d nt belng ________ yu?【答案】7．ut 8．t
9．Yu shuld make gd use ________ this rare pprtunity. 10．Shrtly afterward, plice arrested(逮捕)fur ________ (suspect). 【答案】9．f 10．suspects
三、完成句子1．The reasn ________ ________ ________ ________ ________ he depends n thers t much. 他失败的原因是他太依赖别人了。【答案】why he failed is that
2．________ ________ ________ ________ ________ ________, he went t schl as usual. 虽然他发高烧，但他像往常一样去上学了。【答案】While/Thugh/Althugh he had a high fever
3．________ ________ ________ ________ ________ ________, every family will clean their huses frm tp t bttm. 随着春节的临近，家家户户都会彻底打扫房屋。 【答案】As the Spring Festival is appraching
4．________ ________ in the park ________ her bag was rbbed by a yung man. 就是在公园里，她的包被一个年轻人抢了。【答案】It was; that
5．The earth became s vilent that it was nt clear ________ the shape wuld last ________ ________. 地球变得如此激烈动荡以至于不知道这个固体形状是否会继续存在下去。【答案】whether; r nt
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