新概念英语第二册课件Lesson43（共41页）

这是一份新概念英语第二册课件Lesson43（共41页），共39页。PPT课件主要包含了can，Exercise ，句型转换，重点句型等内容，欢迎下载使用。
Lessn 43Over the Suth Ple
Hw was the plane able t clear the muntains?
The American explrer rdered his men t thrw ut tw heavy fd sacks s the plane rse t10000 feet.
New wrds and expressins 生词和短语ple n. （地球的）极flight n. 飞行explrer n. 探险家lie v. 处于serius adj. 严重的pint n. 地点seem v. 似乎crash v. 坠毁sack n. 袋子clear v. 越过aircraft n. 飞机endless adj. 无尽的plain n. 平原
In 1929, three years after his flight ver the Nrth Ple, the American explrer, R.E. Byrd, successfully flew ver the Suth Ple fr the first time. Thugh, at first, Byrd and his men were able t take a great many phtgraphs f the muntains that lay belw, they sn ran int serius truble. At ne pint, it seemed certain that their plane wuld crash.
It culd nly get ver the muntains if it rse t 10,000 feet. Byrd at nce rdered his men t thrw ut tw heavy fd sacks. The plane was then able t rise and it cleared the muntains by 400 feet. Byrd nw knew that he wuld be able t reach the Suth Ple which was 300 miles away, fr there were n mre muntains in sight. The aircraft was able t fly ver the endless white plains withut difficulty.
Ask and answer:
1. When did the man successfully fly ver the Suth Ple fr the first time ?2.Wh successfully flew ver the Suth ple fr the first time ?3.Wuld the plane crash?4.Hw did they clear the muntain?5.Why did Byrd nw knw that he wuld be able t reach the Suth Ple ?6.Was there any difficulties?
"Can" is ne f the mst cmmnly used mdal verbs in English. It can be used t express ability r pprtunity, t request r ffer permissin, and t shw pssibility r impssibility. Examples: I can ride a hrse. ability We can stay with my brther when we are in Paris. pprtunity She cannt stay ut after 10 PM. permissin Can yu hand me the stapler? request Any child can grw up t be president. pssibility
"Culd" is used t express pssibility r past ability as well as t make suggestins and requests. "Culd" is als cmmnly used in cnditinal sentences as the cnditinal frm f "can." Examples: Extreme rain culd cause the river t fld the city. pssibility Nancy culd ski like a pr by the age f 11. past ability Yu culd see a mvie r g ut t dinner. suggestin Culd I use yur cmputer t email my bss? request We culd g n the trip if I didn't have t wrk this weekend. cnditinal "Culd" cannt be used in psitive sentences in which yu describe a mmentary r ne-time ability. e.g. Yesterday, I culd lift the cuch by myself. Nt Crrect
比较can和be able t
表示成功地做了某事时，只能用was/were able t， 不能用culd。 He culd swim halfway befre he gt tired. (nt crrect) He was able t swim halfway befre he gt tired.(crrect) can用于表示“能力”时是指现在的能力，过去或将来的能力通常用was/were able t或will/shall be able t表示。
can/can’t/culd/culdn’tI can dance the disc. I can’t perfrm ballet.I culd rw a bat ne year ag.I culdn’t swim when I was fur.fly kites/make mdel planes/take phts /sing English sngs.
1. Tm isn’t at schl tday, because he was ___ yesterday. A. in the hspital B. in hspital C. in a hspital D. at hspital
2. He ____ play the pian nw, but he___ play the pian tw years ag. A. culd; can B. can; culdn’t C. can; culd D. can; can’t3. I bught a dll fr Mary ___ a birthday present. A. as B. at C. t D. with
4. Tim can’t play __ pian, but he can play ___ tennis. A. /; the B. the; / C. /; / D. the; the5. — Can yu skate? —___ , I can. A. Of curse B. Srry C. N D. /
Jane can’t use a cmputer.
N, I can’t.
I dn’t think he can play the sccer.
When culd she swim?
1. Jane can use a cmputer. (改为否定句)
2. Can yu draw. (作否定回答)
3. I think he can play the sccer.(变否定句)
4. She culd swim when she was five.(提问)
Sum up the language pints
习惯用语:dance the disc /perfrm ballet/ take phts /wrd ut /take…t…/rw a bat /be gd at /sing sngs/fly a kite/make mdel planes /be in hspital/have a gd time语法知识:情态动词: can/can’t
He can sing very well/a little.She can’t dance at all.Can yu dance? Yes, I can. /N, I can’t.Culd yu ride a bike? Yes, he culd, N, he culdn’t.
Can/Culd he d? Yes he culd./ N, he culdn’t.What can/culd he d? He can/culd swim.What’s eleven plus seven? It’s eighteen.
美国探险家 R.E. 伯德在飞越北极3年之后，于1929年第一次飞越了南极。虽然开始时伯德和他的助手们拍下了飞机下面连绵群山的大量照片，但他们很快就陷入了困境。在有个地方，飞机似乎肯定要坠毁了。只有在飞至10,000英尺的高度时，它才能飞过这些山头。伯德马上命令他的助手们把两个沉重的食物袋扔掉，于是飞机可以上升了，它在离山头400英尺的高度飞越了过去。伯德这时知道他能够顺利飞抵300英里以外的南极了，因为前面再没有山了。飞机可以毫无困难地飞过这片茫茫无际的白色原野！
Hmewrk:1.Recite the new wrds and expressins 2.D the exercises f lessn43
【New wrds and expressins】 生词和短语 ★ple　n.　（地球的）极 Suth Ple 南极 Nrth Ple 北极 Ple Star 北极星
★explrer　n. 探险家 explre v.探险 explratin n.(科研相关)探险,探求,开发 adventure　n.冒险(追求刺激) venture n. 冒险(为了财富,没有生命保障)
★lie　v. 处于 tell a lie 撒谎 lie n.谎言; lie v.撒谎 Eg.:Yu lied. Yu,liar! lie,lied,lied 撒谎 lie/lai/,lay/lei/,lain/lein/处于,位于 stay in bed/lie in bed 躺在床上 in bed 介词短语, lie vi. lie 现在分词--> lying lay v. 放,放置;　lay an egg　下一个蛋 lay vt. lay sth. 放,放置 lay,laid,laid
★pint　n. 地点 pint 点,一般指从飞机上向下看的点 地点　place,spt dt 点 @-> at
★seem　v. 似乎 seem + as if seem + adv. seem　 t be seem　 that... Eg. : He seems rich. 　　　He seems t be rich. 　　　It seems that he is rich. it seems that...看起来似乎... seem as if 看起来似乎 Eg.: He seems as if he had never lived in England befre.
★crash　v. 坠毁 crash(从上向下掉) aircrash 空难 strike 撞击 clash 撞击,冲突
★clear　v. 越过 ver越过(距离) clear(凌空)越过 g ver飞跃 clear the muntain 飞跃山峰 The hrse cleared the fense.
★plain　n. 平原 muntains 高山 plain girl 平凡的女孩 Eg.: I'm a plain girl.
美国探险家 R·E·伯德在飞越北极3年之后，于1929年第1次飞越了南极。（1）这句话包含两个同位语。three years after…为 1929的同位语，作插入性的补充说明；R．E．Byrd 作 the American explrer 的同位语。（2）fr the first time 表示“第一次”，time在这里表示“次”、“回”，还可以说 this time, last time, next time, anther time, each time, fr the last time等：I remind yu fr the last time that if yu dn't hurry, yu'll miss the train.我最后一次提醒你，如果不快点，你会误了火车的。Give him these phts next time yu see him.下次你见到他时把这些相片给他。
虽然开始时伯德和他的助手们拍下了飞机下面连绵群山的大量照片，但他们很快就陷入了困境。（1）连词thugh引导的是让步状语从句，其含义为“虽然……”、“尽管……”。这个从句中的时间状语at first被单独用逗号隔开了，它如果按正常的词序应放在从句的末尾，但有可能会引起误解。（2）at first与主句中的 sn形成时间上的照应，表示先后次序。（3）take a phtgraph f 表示“拍……的照片”：He tk a phtgraph f his huse befre he left hme.他离家前给他家的房子拍了一张照片。（4）that lay belw为 the muntains的定语从句，that为从句的主语。（5）run int truble的含义与 get int truble相似，表示“陷入困境”：Each time he ran int truble, he asked his parents fr help.每当他陷入困境时，他都向他父母求助。
在有个地方，飞机似乎肯定要坠毁了。（1）at ne pint在此处可以解释为“在有个地方”，但它通常的含义为“在某一时刻”，pint指时间上的某一点：At ne pint, he made up his mind t becme a painter.他曾一度下决心要当个画家。（2）it为“先行主语”，真正的主语为that引导的从句。it作先行主语时经常与seem，appear，lk等连用：It nw lks certain that the meeting is ging t be put ff.现在似乎可以肯定会议将被推迟。
5．… it cleared the muntains by  400 feet. ……它在离山头400英尺的高度飞越了过去。clear在这里表示“（不接触地）越过”：He cleared 2. 10 metres. 他跳过了2.10米。by表示“以……之差”：I missed the train by ten minutes.我晚了10分钟，没赶上火车。He is yunger than me by tw years.他比我小两岁。