高中英语人教版 (2019)必修 第一册Unit 5 Languages around the world优质ppt课件

这是一份高中英语人教版 (2019)必修 第一册Unit 5 Languages around the world优质ppt课件，文件包含Unit5LanguagesAroundtheWorldPeriod3DiscoveringUsefulStructures配套课件人教2019版pptx、Unit5LanguagesAroundtheWorldPeriod3DiscoveringUsefulStructures讲义人教2019版docx等2份课件配套教学资源，其中PPT共27页， 欢迎下载使用。

读下列教材原句并感知黑体部分的共性。1．There are many reasns why this has been pssible，but ne f the main factrs has been the Chinese writing system.2．Emperr Qinshihuang united the seven majr states int ne unified cuntry where the Chinese writing system began t develp in ne directin.3．I tld my mum that I wanted t give up, and that I wuld never live in a cuntry where German was spken.
4．I finally understd the reasn why my mum had encuraged me nt t give up.5．And I remember that day when I suddenly felt like German was n lnger a freign language.6．It was a time when peple were divided gegraphically.
探究点1：关系副词的用法关系副词在引导定语从句时，其功能相当于介词短语，在句中作状语。when，where，why在定语从句中分别作时间状语、地点状语和原因状语。1．when指时间，在定语从句中作时间状语；在不同语境中等同 于“介词in/at/n/during＋which”。 I still remember the day when(＝n which) I first went t the Great Wall.
我还记得我第一次去长城的那一天。Peple in China will never frget the year when(＝in which) the virus raged and dctrs fught bravely against it.在中国，人们永远不会忘记病毒肆虐，医生们勇敢地与之斗争的那一年。2．where指地点，在定语从句中作地点状语； 在不同语境中等 同于“介词in/at＋which”。 (1)The huse where(＝in which) I lived ten years ag has been pulled dwn. 我10年前居住的那所房子已经被拆了。
He is nw wrking in the factry where(＝in which) his father wrked.现在他正在他父亲工作过的那家工厂工作。(2)where还可用在表示抽象地点意义的名词后，如situatin, stage, pint, case, psitin, cnditin等。The accident has reached t the pint where bth their parents are t be called in.事情发展到如此地步，不得不请双方家长来一趟了。The cnflict had develped int a stage where the tw cuntries were gathering big trps n the brder.
冲突已经发展到两国在边境集结大量军队的阶段。He has gt himself int a dangerus situatin where he is likely t lse cntrl ver the plane.他把自己陷入了危险的境地，很可能会失去对飞机的控制。3．why引导定语从句时，先行词通常是reasn, 关系词在从句中 作原因状语，等同于“介词fr＋which”。The reasn why(＝fr which) he succeeded in the exam is that he studied very hard.他考试成功的原因是他学习很认真。
The reasn why(＝fr which) he turned dwn my invitatin was that he was therwise engaged. 他拒绝我的邀请的原因是他另有安排。
用适当的关系词填空(1)I want t knw the reasn _______yu didn't keep me infrmed f the news befre. (2)The factry _________his father wrks is lcated in the east f the city.(3)He arrived in Beijing n the day _________I happened t leave.
探究点2：关系代词与关系副词的区别选用关系代词还是关系副词，归根结底要看定语从句缺什么成分。如果缺的是主语、宾语或定语，就用关系代词，如果缺的是状语，就用关系副词。1．先行词是时间。例如： I will never frget the days when we had a gd time n the beach. 我永远不会忘记我们在海滩上玩得很开心的那些日子。(从句 缺状语，故用when )
I will never frget the days (which/that) we spent tgether n the beach. 我永远不会忘记我们一起在海滩上度过的日子。(从句缺宾语，故用which/that)2．先行词是地点。例如： The muntain village where I used t stay fr ne night last year has taken n a new lk. 我去年住过一晚的那个山村现在面貌焕然一新。(从句缺状 语，故用where )
The muntain village (which/that) we paid a visit t last year has taken n a new lk.我们去年参观过的那个山村现在面貌一新。(从句缺宾语，故用which/that)3．先行词是原因。例如： The reasn why he was late fr wrk was that he had an accident n the way. 他上班迟到的原因是他在路上出了事故。(从句缺状语，故用 why )
The reasn (which/that) he gave fr his being late fr wrk was that he had an accident n the way. 他说他上班迟到的原因是他在路上出了事故。(从句缺宾语，故用which/that)探究点3：介词＋关系代词“介词＋关系代词”结构引导定语从句时，关系代词只能用which (指物) 或whm(指人)，即“介词＋which/whm”，并且关系代词不能省略。
1．介词的选用(1)“介词＋关系代词(which/whm)”中介词的选择：一先，二动，三意义。①“一先”，即根据先行词来确定介词。The factry in which I'm wrking mainly prduces cmputers.我工作的工厂主要生产电脑。(in which代替in the factry，“在工厂里”用介词in。)
②“二动”，即根据定语从句中的谓语动词来确定介词。这就是我花10元钱买的那本书。 ③“三意义”，即根据定语从句的意义来确定介词。I tk a pht f the students, amng whm was seated a teacher.我给这些学生拍了一张照片，他们中间坐着一位老师。
(2)介词前有时加名词、数词等，构成“名词/数词/不定代词＋f which/whm”结构，在定语从句中作主语。English is a language shared by several diverse cultures, each f which uses it differently.英语是一种由多元文化共享的语言，每一种文化使用它的方式各不相同。(3)“复合介词＋which”引导的定语从句，常用逗号与先行词隔开，而且定语从句常用倒装语序。He lived in a big huse, in frnt f which std a tall tree.他住在一幢大房子里，房前有一棵大树。
(1)当定语从句中的谓语动词短语是固定搭配，动词与介词不可分割时，该动词短语中的介词不能前置，如listen t, lk at, lk fr, lk int, depend n, make use f, pay attentin t, take care f等。The babies whm the nurses are lking after are very healthy. 护士们照看的婴儿很健康。The dctr that yu sent fr has nt cme.你派人去请的那个医生还没来。
(2)“介词＋where”和“介词＋which”的用法不同。例如：His head sn appeared ut f the windw, frm where he saw nthing but trees.他的头很快从窗口露出来，从那儿除了树木他什么也看不见。(frm where相当于frm ut f the windw，而不是frm the windw)He hid himself behind the dr, frm where he culd hear the steps clearly.他躲在门后，从那里他可以清楚地听到脚步声。(frm where相当于frm behind the dr，而不是frm the dr)
2．关系代词的选择“介词＋关系代词”既可以引导限制性定语从句，也可以引导非限制性定语从句。在此结构中，先行词指人时关系代词用whm，不可用wh/that；先行词指物时关系代词用which，不能用that。Yesterday we visited the West Lake fr which Hangzhu is famus. 昨天我们参观了杭州著名的西湖。
The naughty by made a hle in the wall thrugh which he culd see what was happening utside. 那个淘气的男孩在墙上打了一个洞，通过这个洞他可以看到外面发生的事情。
用适当的关系词填空(1)Scientists have advanced many theries abut why human beings cry tears, nne f _________has been prved. 关于人类为什么哭的时候会流泪，科学家已经提出很多理 论，但没有一个被证实。(2)The ld man has tw sns, bth f ________are lawyers studying abrad nw. 那个老人有两个儿子，他们两个都是律师，现在都在国外学 习。
(3)My cmputer, withut _________I can't surf the Internet, brke dwn yesterday. 昨天我的电脑坏了，没有它我不能上网了。