2021学年Unit 3 The world of science多媒体教学课件ppt
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这是一份2021学年Unit 3 The world of science多媒体教学课件ppt,共24页。PPT课件主要包含了状语 ,主语 ,宾语 ,宾语补足语 ,定语 ,to play ,to type ,to hear ,feel ,to see 等内容,欢迎下载使用。
一、阅读下列课文中的句子,指出不定式所做的成分1.They are ften s thick that yu cannt see the sun,and the wind is smetimes strng enugh t mve sand dunes.成分: 2.T have been caught in a sandstrm was a terrible experience...成分: 3.The strms smetimes cntinue all day and traffic mves very slwly because the thick dust makes it difficult t see.成分: 4.When a sandstrm arrives in the city,weather experts advise peple nt t g ut.成分:
5.It’s difficult t breathe and the dust makes me ill.成分: 6.T prevent it cming nearer,the gvernment is planting trees.成分: 7.There is nthing t d.成分:
二、语法填空1.Tell the children nt (play)n the street. 2.She has many letters (type). 3.She pretended (write)a letter in the rm when I came in. 4.I dn’t knw whether yu happen (hear),but I am ging t study in the USA this September. 5.When a clse friend dies,we can’t help but (feel)sad.
t be writing
三、完成句子1.天气似乎正在好转。The weather seems nw. 2.没有什么可看的。There is nthing . 3.我不知道该乘哪路车。I dn’t knw . 4.他被认为偷了钱。He was cnsidered the mney.
t be imprving
which bus t take
t have stlen
1.I can’t help but feel very cncerned.我感到非常担忧。★考点:cncerned adj.关心的;担心的She is cncerned abut yur safety.她担心你的安全。考点延伸1)阅读下列句子,体会黑体词的词性及含义①That is a reprt that cncerns air pllutin.那是一个关于空气污染的报告。词性:动词 含义:牵涉;涉及②What are yur main cncerns as a writer?作为一名作家,你主要关注的是哪些问题?词性:名词 含义:重要的事情
③He asked several questins cncerning the future f the cmpany.他问了几个有关公司前途的问题。词性:介词 含义:关于,涉及2)阅读下列句子,体会cncern的相关短语及含义①As far as I’m cncerned,that’s nt enugh.就我而言,那还不够。短语:as far cncerned 含义:就……而言 ②We are all cncerned fr/abut her health.我们大家都担心着她的健康。短语:be cncerned fr/abut 含义:担心
③It’s said that yu’re cncerned with this matter.据说你与此事有关。短语:be cncerned with 含义:与……有关 ④A teacher must shw cncern fr every student.教师要关心每一个学生。短语:shw (deep) cncern fr sb. 含义:表示对某人(十分)关心
2.Grammar不定式的用法动词不定式在句中可做主语、表语、宾语、状语、定语、补足语等。不定式的形式有:一般式、进行式、完成式。当不定式的逻辑主语是不定式动作的承受者时,不定式通常用被动式。★动词不定式的一般式所表示的动作通常与谓语表示的动作或状态同时或几乎同时发生,或在它之后发生。构成:主动式:t d 被动式:t be dneShe invited me t attend the meeting.她邀请我参加会议。Nthing is allwed t be taken ut f the reading rm.不允许将任何东西拿出阅览室。
★动词不定式的进行式表示动作正在进行,与谓语动词表示的动作同时发生。构成:t be dingWhen yu called me last night,I happened t be ding my hmewrk.昨天晚上你给我打电话时,我恰好正在做作业。★动词不定式的完成式所表示的动作在谓语动词的动作之前发生。构成:主动式:t have+动词过去分词 被动式:t have been+动词过去分词The rm was said t have been cleaned.据说那个房间已经被打扫过了。
★考点一:不定式做主语T finish that task in such a shrt time is really hard.在如此短的时间完成任务真的很难。考点延伸1)不定式直接做主语。语法填空,并翻译 (master)English gives us much help in the study f science. 翻译: 答案:T master;掌握英语在科学研究中给予我们很大的帮助。
2)it做形式主语,不定式做真正的主语。语法填空,并翻译It’s plite (wait)in line. 翻译: 答案:t wait;排队等候是很有礼貌的。3)it做形式主语,不定式的复合结构做真正的主语。完成句子①他不可能放弃这个计划。It is impssible him t give up the plan. ②你帮助我,真是好心。It is kind yu t help me. 答案:①fr ②f
4)用于It takes/tk sb.t d sth.句型It tk them half the night t get hme in the snw.在大雪中,他们用了半个晚上的时间才到家。★考点二:不定式做宾语I hpe t hear frm yu.我希望能收到你的信。考点延伸下列动词常跟不定式做宾语:affrd,refuse,learn,ffer,fail,plan,agree,decide,demand,manage,arrange,determine等。
★考点三:不定式做宾语补足语I warn yu nt t g ut alne at night.我警告你晚上不要一个人单独外出。考点延伸1)有些动词如:advise,allw,ask,cause,expect,cnsider,get,cmmand,drive,enable,encurage,frbid,frce,invite,warn,wish,wuld like/lve,rder,permit,persuade,tell,urge等,可跟复合宾语,构成动词+sb.+t d sth.形式。语法填空我想让你帮我做英语练习。I wuld like yu (help)me with my English exercises. 答案:t help
2)表示五看(lk at;see;watch;ntice;bserve)、三使(make;let;have)、两听(listen t;hear)、一感觉(feel)等动词的宾语补足语省略不定式符号t温馨提示:当以上如:make sb.d sth.形式变成被动语态时,原来的宾语补足语变成主语补足语,应加上不定式符号t。语法填空①你注意到有人进了那所房子了吗?Did yu ntice anyne (enter)the huse? ②我们让他整天整夜工作。We made him (wrk)all day and all night. ③人们看见她跑进教室。She was seen (run)int the classrm. 答案:①enter ②wrk ③t run
★考点四:不定式做状语①The rm is cmfrtable t live in.(表程度)房子住起来很舒适。②We were pleased t hear the news.(表原因)我们听到消息很高兴。③She explained the wrd again with sme examples t make herself understd.(表目的)她又用了一些例子解释了这个单词,以使别人明白她的讲解。④Jane hurried back nly t find her mther sent t hspital.(表结果)简匆匆忙忙地赶回家,结果发现她母亲被送进了医院。
★考点五:不定式做定语We students shuld have the curage t face any difficulty.我们学生应该有勇气面对任何困难。考点延伸1)被修饰的名词词组是不定式的逻辑宾语。翻译句子I have much wrk t d.翻译: 答案:我有许多工作要做。
2)被修饰的名词词组是不定式的逻辑主语。翻译句子She was the last ne t leave the classrm last night.翻译: 答案:她是昨晚最后一个离开教室的。3)修饰ability,chance,way,right,need,hpe,plan,decisin,wish,reasn等中心词的不定式与其构成同位关系。翻译句子Man’s ability t reasn makes him different frm the animal.翻译: 答案:人类的思考力使自己不同于动物。
4)被序数词、形容词最高级或被nly,last,next等词修饰的名词后可以用不定式做定语。翻译句子①It is the mst interesting bk t read.翻译: 答案:这是可读的最有趣的书。②He is always the first persn t cme and the last ne t leave.翻译: 答案:他总是第一个来最后一个离开。
★考点六:不定式做表语①Our plan is t set up anther middle schl fr the farmers’ children.我们的计划是给农民的孩子们再建一所中学。②My jb is t drive them t the pwer statin every day.我的工作是每天开车送他们去发电站。③T see is t believe.眼见为实。④What I want t say is t be happy.我要说的是要高兴。考点延伸当主语是aim,duty,hpe,idea,mistake,plan,purpse为中心的名词词组,用不定式说明主语的内容。
★考点七:but+不定式I had nthing t d but watch TV.我除了看电视外无事可做。考点延伸1)不定式在but,except,beside,ther than后面时,如果这些词或短语之前有行为动词d的某种形式,(而非助动词)那么这些词或短语后的不定式可以不带t,否则带t。语法填空①工人们只是喝茶聊天。The wrkers d nthing but (drink)tea and (talk)t each ther. ②他别无选择,只能接受事实。He had n chice but (accept)the fact. 答案:①drink;talk ②t accept
2)can’t but,can’t chse but,can’t help but之后常跟不带t的动词不定式,常译为“不得不,只好”。语法填空①我不得不告诉她整件事情。I can’t but (tell)her the whle thing. ②他只好做那件事了。He can’t chse but (d)it. ③听了他的故事,我们忍不住大笑起来。We culdn’t help but (laugh)when we heard his stry. 答案:①tell ②d ③laugh
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