资源描述
单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Grammar,The use of “,it,”,it,作代词,一,. it,作形式主语,二,. It,作形式宾语,三,. it,特殊句型,四,. it,常用的固定搭配,2.,It,is no good smoking.,3.,It,is likely that he will become addicted,to it,.,1.,It,is bad to smoke.,一、,it,用作形式主语,用以平衡句子结构，用,it,来替代作主语的,从句、动词不定式、动名词，,而把真正作主语的从句、动词不定式、动名词置于句尾。,对于我们来说，努力学习英语很必要。,It is necessary _us to,work hard on English.,for,你把真相说出来了，真诚实。,It is honest _you to tell me the truth.,of,To work hard on English,is necessary,for,us,.,You are honest,to tell me the truth.,Its + adj,+,of / for,sb. to do sth,（,1,）,It is adj.,for,sb.to do sth,.,It is illegal for him to drive a car without a license,.,1.,替代作主语的,动词不定式,此处,adj.,通常为,描述事件的形容词,：,easy,，,difficult,，,hard,，,tough,，,necessary,，,unnecessary,，,possible,，,impossible,，,likely,，,unlikely,，,right,，,wrong,，,important,，,unimportant,，,legal,，,illegal,，,polite,，,impolite,，,clear,，,obvious,，,certain,，,suitable,，,proper,，,fit,，,useful,，,useless,，,dangerous,To drive a car without a license is illegal for him.,（,2,）,It is adj.,of,sb. to do sth,.,Its kind of you to help me with the problem.,此处,adj.,通常为,描述人的形容词,：,kind,，,unkind,，,nice,，,rude,，,cruel,，,selfless,，,thoughtful,，,thoughtless,，,careful,，,careless,，,silly,，,foolish,，,stupid,，,clever,，,wise,，,crazy, generous, etc.,You are kind,to help me with the problem.,1.,替代作主语的,动词不定式,It is,no good/no use/ useless,doing ,It is,(well) worth,doing ,It is,a waste of money/ time/ energy,doing,Its,(well) worthwhile,doing/,to do,Its,great fun,doing,2. It,替代作主语的动名词的常见句型,Its no use crying over spilt milk.,覆水难收,3. it,作形式主语替代主语从句,It is amazing that,at my age Im still fit,enough to cycle 20 km in an afternoon.,It is obvious that,James grandpa lives a,very active and healthy life.,It is still a question whether,we will hold,the meeting as planned.,It is adj. +clause,(important, vital, necessary, surprising,amazing, natural, ridiculous, unbelievable, etc),said,reported,believed,It is thought that .,known,told,hoped,“,据说（据报道,）”,It is v-ed that,= sb./sth,. is v-ed to ,It is said that he has gone abroad for further education.,=,He is said to,have gone abroad for further education.,It is + noun +,从句,a pity,a shame,It is an honor that .,a fact,a surprise,no wonder,common sense,It is a pity that he (should) miss such a good chance.,It is a pity that he is ill and will miss such a good chance.,(a shame, a pity),1.I,think,it,no use arguing with him.,2.I,found,it,very interesting to study English.,3.He,made,it,a rule,that after supper he,would walk his dog for half an hour.,4.I hate,it,when it rains.,5.I enjoy,it,if you can help me.,二、,it,作形式宾语,常用的动词有,think, believe, make, find,consider, feel,enjoy, hate,等,1.It is/ was+,被强调部分,+,that/who,+,句子其他部分,2.It takes sb to do sth,3.It is ones turn to do sth,4.It,is,the first/second time that sb,have/has done,It,was,the first/second time that sb.,had done,5.It seems/ looks/ appears that/ as if ,6.It hit/ struck/ occurred to sb,that ,7.Its up to sb,to do ,8.It is/ was +,时间段,+ since ,9.It was/ will be +,时间段,+before,10.I would appreciate it if ,11.Its (high) time that sb.,过去式,/should do,三,. it,特殊句型,It is (was)+,被强调部分,+ that (who) +,句子其他部分,判断方法？,（一）强调句型的强调部分必须是对,that / who,之后句子的某一成分表示强调，如果把“,It is (was).that ”,去掉，该句应该意思完整，不缺任何句子成分：,1.Is it _ who wants to see you?,A. him B. he C. his D. himself,B,2.It was _ who respected all their teachers.,A. them B. their C. they D. themselves,C,3.- Who is Mary ?- Was it _ that you referred to ?,A. he B. she C. her D. they,C,强调部分如果是人称代词，应根据句子需要选择它的主格或宾格形式,1.It _ Mike and Mary who helped the old,man several days ago .,A. was B. are C. were D. had been,2.It _ at Christmas that John Smith gave,Mary a handbag.,A. must have B. will be,C. might have been D. may have had,注意谓语动词形式与整个句子语境的一致性,C,A,（二）强调部分为疑问词时：,1._ electricity plays an important part in our daily life ?,A. Why was it that B. Why is it that,C. Why is it D. Why it is that,B,2.Who was it _ wanted to see me just now?,A. that B. why C. when D. when,A,3._ you met the foreigner from Canada ?,A. Where it was that B. Who it was that C. Where was it that D. Where was that,C,强调部分为疑问代词或疑问副词时，该强调句句型结构与特殊疑问句句型相同，即：“疑问词,+,一般疑问句”,（三）被强调部分为, not until ,句型：,1.It was,not until,late in the evening _ her husband arrived home .,A. which B. when C. that D. how,C,2.It was,not until,1920 _ regular radio broadcasts began.,A. which B. when C. that D. since,C,Her husband did,nt,arrive home,until,late in the evening.,The regular radio broadcasts did,nt,begin,until,1920.,注意 “,not . until ”,句型的变化。,比较下列三个句子,：,1.She,didnt,remember her appointment with the doctor,until,she had arrived home.,强调句,2.It was,not until,she had arrived home that she remembered her appointment with the doctor.,3.Not until,she had arrived home,did,she remember her appointment with the doctor.,3.Not until,I,didnt,realize she was a famous film star,until,she took off her dark glasses.,1) Not until,2) It was,not until,she took off her dark,glasses,that,I realized she was a famous,film star.,she took off her dark glasses,did I realize,she was a famous film star.,改为强调结构,1.The meeting will not begin until everyone is seated,.,It is,not until everyone is seated,that,the meeting will begin.,Why,is it that,he came late for the meeting?,2.Why did he come late for the meeting?,3.How did you find his house?,How,was it that,you found his house?,1.It is/ was+,被强调部分,+t,hat/who,+,句子其他部分,2.It takes sb to do sth,3.It is ones turn to do sth,4.It,is,the first/second time that sb,have/has done,It,was,the first/second time that sb.,had done,5.It seems/ looks/ appears that/ as if ,6.It hit/ struck/ occurred to sb,that ,7.Its up to sb,to do ,8.It is/ has been+,时间段,+ since ,9.It was/ will be +,时间段,+before,10.I would appreciate it if ,11.Its (high) time that ,四,. it,特殊句型,9. It was/will be +,时间段,+ before,从句,(,一段时间,),后,就,/,才,It,was some time,before,he could speak.,It,was not long,before,I realized my mistake.,1.I hate _ when people talk with their mouths full.,it B. that C. these D. them,2.In which play is _ your brother will appear?,that where B. this when,C. it that D. it where,3. _ the harder you work, the better result youll get.,A. Its believed that,B. What we believed that,C. Its fact D. What the fact is,A,C,A,4.Nothing can stop us, _?,cant it B. can it C. cant we D. can we,5.-Can you tell us how the war was won in the end ?,- I dont know, _.,Its hard to say B. It doesnt matter,C.Its no use saying D.It,depends on the work,6.Does _ matter a lot whether she will come here by bus or by taxi?,the thing B. that C. it D. her mother,A,C,B,10. _ now pretty late, we took candles and went upstairs.,A.Being,B. For C. For being D. It being,11.Our food and service are better than _ used to be.,it B. we C. they D. them,12.The teacher told the students _.,A.why to learn English important,B.why was it important to learn English,C.why it important to learn English,D.why it was important to learn English,D,C,D,13.The TV sets made in China are much better than _ in Japan.,that B. those C. them D. it,14.-Im looking for a flat.,-Would you like _ with _ garden?,A.it; the B.it; a C.one; a D.one;the,15._ four years since I joined the Army.,A.It was B.It is C.There is D.There,was,B,C,B,四、,It,常用的固定搭配,make it,（,1,）在口语当中相当于,succeed,，表示：,成功、做到、说定、赶上、及时到达,例,Its hard to,make it,to the top in show business.,（,2,）在口语中相当于,fix the date for,，表示“约定好时间”,例,Shall we meet next week,？,OK. We just,make it,next Saturday.,2. take it/things easy,相当于,Dont worry or dont hurry.,用来劝告别人，表示“,不要慌，别担心，沉住气”,Take it easy,！,He will do it well.,3. It all depends/that all depends,在口语中，相当于,it hasnt been decided yet,，表示,“那得看情况，还没有定下来”,Are you going to the countryside for holiday,？,It/That all depends.,4. Its up to sb.,在口语中，相当于,its decided by sb.,表示“,由,决定，由,负责，取决于,”,Shall we go out for dinner,？,Its up to you.,
展开阅读全文