一、強(qiáng)調(diào)句
（一）強(qiáng)調(diào)句句型
1、陳述句的強(qiáng)調(diào)句型：It is/ was + 被強(qiáng)調(diào)部分（通常是主語(yǔ)、賓語(yǔ)或狀語(yǔ)）+ that/ who（當(dāng)強(qiáng)調(diào)主語(yǔ)且主語(yǔ)指人）+ 其它部分。
e.g. It was yesterday that he met Li Ping.
2、一般疑問(wèn)句的強(qiáng)調(diào)句型：同上，只是把is/ was提到it前面。
e.g. Was it yesterday that he met Li Ping?
3、特殊疑問(wèn)句的強(qiáng)調(diào)句型：被強(qiáng)調(diào)部分（通常是疑問(wèn)代詞或疑問(wèn)副詞）+ is/ was + it + that/ who + 其它部分？
e.g. When and where was it that you were born?
4、強(qiáng)調(diào)句例句：針對(duì)I met Li Ming at the railway station yesterday.句子進(jìn)行強(qiáng)調(diào)。
強(qiáng)調(diào)主語(yǔ)：It was I that (who) met Li Ming at the railway station yesterday.
強(qiáng)調(diào)賓語(yǔ)：It was Li Ming that I met at the railway station yesterday.
強(qiáng)調(diào)地點(diǎn)狀語(yǔ)：It was at the railway station that I met Li Ming yesterday.
強(qiáng)調(diào)時(shí)間狀語(yǔ)：It was yesterday that I met Li Ming at the railway station.
5、注意：構(gòu)成強(qiáng)調(diào)句的it本身沒(méi)有詞義；強(qiáng)調(diào)句中的連接詞一般只用that, who，即使在強(qiáng)調(diào)時(shí)間狀語(yǔ)和地點(diǎn)狀語(yǔ)時(shí)也如此，that, who不可省略；強(qiáng)調(diào)句中的時(shí)態(tài)只用兩種，一般現(xiàn)在時(shí)和一般過(guò)去時(shí)。原句謂語(yǔ)動(dòng)詞是一般過(guò)去時(shí)、過(guò)去完成時(shí)和過(guò)去進(jìn)行時(shí)，用It was … ，其余的時(shí)態(tài)用It is … 。
（二）not … until … 句型的強(qiáng)調(diào)句
1、句型為：It is/ was not until + 被強(qiáng)調(diào)部分 + that + 其它部分
e.g. 普通句：He didn’t go to bed until/ till his wife came back.
強(qiáng)調(diào)句：It was not until his wife came back that he went to bed.
2、注意：此句型只用until，不用till。但如果不是強(qiáng)調(diào)句型，till, until可通用；因?yàn)榫湫椭蠭t is/ was not … 已經(jīng)是否定句了，that后面的從句要用肯定句，切勿再用否定句了。
（三）謂語(yǔ)動(dòng)詞的強(qiáng)調(diào)
1、It is/ was … that … 結(jié)構(gòu)不能強(qiáng)調(diào)謂語(yǔ)，如果需要強(qiáng)調(diào)謂語(yǔ)時(shí)，用助動(dòng)詞do/ does或did。
e.g. Do sit down. 務(wù)必請(qǐng)坐。
He did write to you last week. 上周他確實(shí)給你寫(xiě)了信。
Do be careful when you cross the street. 過(guò)馬路時(shí)，務(wù)必（千萬(wàn)）要小心��！
2、注意：此種強(qiáng)調(diào)只用do/ does和did ，沒(méi)有別的形式；過(guò)去時(shí)用did ，后面的謂語(yǔ)動(dòng)詞用原形。
二、It的用法
（一）作人稱(chēng)代詞
1、it代替前面（或后面）的單數(shù)名詞或分句等所表示的事物。
e.g. You cannot eat your cake but have it.（it代替前面的cake）
Although we cannot see it, there is air all around us. （it代替后面的air）
They say he has left town, but I don’t believe it. （it代替前面They…town分句中的情況）
2、代替有生命但不能或不必分陰陽(yáng)性的東西（包括嬰兒）。
e.g. Yesterday we saw a big tree. It was fully twenty metres high. （it代替前面的tree）
The baby cried because it was hungry. （it代替前面的baby）
3、在某些習(xí)慣說(shuō)法中，可以代替人。
e.g. ---- Someone is knocking at the door, Peter. ---- Who is it? ---- It’s me.
---- Who are singing? ---- It is the children.
---- The light is still on in the lab. It must be the third-year students doing the experiment.
4、it與one的區(qū)別：這兩個(gè)詞都可以代表前面說(shuō)過(guò)的名詞，但it用于同名同物的場(chǎng)合；one則用于同名異物的場(chǎng)合。
e.g. ---- Do you still have the bicycle? ---- No, I have sold it.
---- Is this knife yours? ---- No. It is Xiao Zhang’s. Mine is the one on the desk.
5、it與that的區(qū)別：兩詞都可代替某一特定名詞，但that指同一類(lèi)，并非同一個(gè)。
e.g. The climate of South China is mild（溫和的）; I like it very much.（it指the climate of South China）
The climate of South China is much better than that of Japan.（that指the climate）
（二）作無(wú)人稱(chēng)代詞
it作無(wú)人稱(chēng)代詞時(shí)，除了句中找不到它所代表的詞語(yǔ)外，另一個(gè)特點(diǎn)是它后面的內(nèi)容都是表示天氣、時(shí)間、距離、度量衡及情況等。
It is fine (rainy, windy, etc.).
It is noon.
It is a half hour’s walk to the factory.
It is eighteen square metres in area.
What does it matter?
（三）作強(qiáng)調(diào)詞，構(gòu)成強(qiáng)調(diào)結(jié)構(gòu)
用以幫助改變句子結(jié)構(gòu)，使句子的某一成分受到強(qiáng)調(diào)�！癐t is (was) + 所強(qiáng)調(diào)的成分 + that (who) + 其它成分�！痹谶@個(gè)句型中，it本身沒(méi)有詞義。詳見(jiàn)“一、強(qiáng)調(diào)句”。
（四）引導(dǎo)詞it作形式主語(yǔ)（賓語(yǔ)）
為了使句子平衡，常采用形式主語(yǔ)（或賓語(yǔ)）it ，而把真正的主語(yǔ)（或賓語(yǔ)）置于句子后面。通常引導(dǎo)詞it與它所代替的句子成分中間要夾有某些詞。
e.g. It takes half an hour to go there on foot.（It與to go there on foot之間夾有takes half an hour四個(gè)詞）
We thought it strange that Mr Smith did not come last night. （it與that從句中間夾有 strange）
但有時(shí)it與所替代部分之間并不夾有其它詞。
e.g. You may depend on it that they will support you.（因?yàn)榻樵~on之后一般不直接接that引導(dǎo)的賓語(yǔ)從句。注意：it不是多余的，不能當(dāng)作錯(cuò)句）
練習(xí)一、強(qiáng)調(diào)句、It的用法
1. My bike is missing. I can’t find ____ anywhere.
A. one B. ones C. it D. that
2. ---- Who’s that? ---- ____ Professor Li.
A. That’s B. It’s C. He’s D. This’s
3. ____ was Jane that I saw in the library this morning.
A. It B. He C. She D. That
4. ---- Have you ever seen a whale alive? ---- Yes, I’ve seen ____.
A. that B. it C. such D. one
5. The color of my coat is different from ____ of yours.
A. this B. that C. it D. one
6. ____ will do you good to do some exercise every morning.
A. It B. There C. Those D. You
7. We think ____ our duty to pay taxes to our government.
A. that B. this C. its D. it
8. The climate of Shanghai is better than ____ of Nanjing.
A. that B. it C. which D. what
9. ____ four years since I joined the Army.
A. There was B. There is C. It was D. It is
10. How long ____ to finish the work?
A. you’ll take B. you’ll take it C. will it take you D. will take you
11. It was through Xiao Li ____ I got to know Xiao Wang.
A. who B. whom C. how D. that
12. It was in the rice fields ____ we had our league meeting.
A. where B. that C. in which D. on which
13. It was on October 1st ____ new China was founded.
A. which B. when C. as D. that
14. Was it because he was ill ____ he asked for leave?
A. and B. that C. that’s D. so
15. Mary speaks in a low voice; ____ is difficult to know what she is saying.
A. it B. that C. so D. she
16. It was ____ I met Mr Green in Shanghai.
A. many years that B. many years before C. many years ago that D. many years when
17. ____ is not everybody ____ can draw so well.
A. It, all B. It, that C. There, who D. There, that
18. So ____ that no fish can live in it.
A. shallow is the lake B. the lake is shallow C. shallow the lake is D. is the lake shallow
三、省略
為了使講話(huà)和行文簡(jiǎn)潔，句中某些成分有時(shí)可省略。省略可分以下幾種情況：
（一）簡(jiǎn)單句中的省略
1、省略主語(yǔ)：祈使句中主語(yǔ)通常省略。其它省略主語(yǔ)多限于少數(shù)現(xiàn)成的說(shuō)法。
e.g. (I) Thank you for your help.（括號(hào)內(nèi)為省略的詞語(yǔ)，下同）
(I) see you tomorrow. (It) Doesn’t matter.
2、省略主謂語(yǔ)或主謂語(yǔ)的一部分。
e.g. (There is) No smoking. (Is there) Anything wrong? Why (do you) not say hello to him?
3、省略作賓語(yǔ)的不定式短語(yǔ)，只保留to。
e.g. ---- Are you going there? ---- I’d like to (go there).
He did not give me the chance, though he had promised to (give me the chance).
注意：如果該賓語(yǔ)是be動(dòng)詞或完成時(shí)態(tài)，則須在to之后加上be或have。
e.g. ---- Are you an engineer? ---- No, but I want to be.
---- He hasn’t finished the task yet. ---- Well, he ought to have.
4、省略表語(yǔ)。
e.g. ---- Are you thirsty? ---- Yes, I am (thirsty).
5、同時(shí)省略幾個(gè)成分。
e.g. Let’s meet at the same place as (we met) yesterday.
---- Have you finished your work? ---- (I have) Not (finished my work) yet.
（二）并列句中的省略
兩個(gè)并列分句中，后一個(gè)分句常省略與前一分句中相同的部分。
e.g. My father is a doctor and my mother (is) a nurse.
I study at college and my sister (studies) at high school.
（三）主從復(fù)合句中的省略
1、主句中有一些成分被省略。
e.g. (I’m) Sorry to hear that you are ill.
(It is a) Pity that he missed such a good chance.
2、省略了一個(gè)從句或從句的一部分，用so或not（切不可用it或that）代替。
e.g. ---- Is he coming back tonight? ---- I think so.
---- Is he feeling better today? ---- I’m afraid not.
這種用法常見(jiàn)的有：How so? Why so? Is that so? I hope so. He said so 及I suppose not. I believed not. I hope not等。（但I(xiàn) don’t think so比I think not更常用）。
（四）其它省略
1、連詞that的省略：
①、賓語(yǔ)從句中常省略連詞that，但也有不能省略的情況（參看“名詞性從句”等有關(guān)部分）。
②、在定語(yǔ)從句中，that在從句中作賓語(yǔ)時(shí)可省略。
③、引導(dǎo)主語(yǔ)從句、同位語(yǔ)從句等的連詞that一般不可省略。在表語(yǔ)從句中偶爾可省略。
2、不定式符號(hào)to的省略
①、并列的不定式可省去后面的to。
e.g. I told him to sit down and wait for a moment.
②、某些使役動(dòng)詞（如let, make, have）及感官動(dòng)詞（如see, watch, notice, hear, feel, look at和listen to等）后面作賓語(yǔ)補(bǔ)足的不定式一定要省去to，但在被動(dòng)語(yǔ)態(tài)中須把to復(fù)原。
e.g. ---- I saw the boy fall from the tree. ---- The boy was seen to fall from the tree.
③、介詞but前若有動(dòng)詞do，后面的不定式不帶to。
e.g. The boy did nothing but play.
3、在某些狀語(yǔ)從句中，從句的主語(yǔ)與主句主語(yǔ)一致時(shí)，可省去“主語(yǔ) + be”部分。（參看“狀語(yǔ)從句”有關(guān)部分）
4、連詞if在部分虛擬條件句中可省略，但后面的語(yǔ)序有變化（參見(jiàn)“倒裝句”有關(guān)部分）
5、主句與從句各有一些成分省略。
e.g. The sooner (you do it), the better (it will be).
四、插入語(yǔ)
英語(yǔ)句子中（尤其在口語(yǔ)中）常插入一些單詞、短語(yǔ)或者句子，用來(lái)補(bǔ)充某些含義。語(yǔ)法上稱(chēng)他們?yōu)椤安迦胝Z(yǔ)”。
（一）插入語(yǔ)的類(lèi)型：
1、單詞（多是副詞），如：besides, however, otherwise, therefore, though等。
e.g. She is looking fit, though. 他看起來(lái)倒是健康。
I can, however, discuss this when I see you.
2、短語(yǔ)
e.g. China and India, for example, are neighbours.
By the way, where are you from?
3、句子
e.g. He is an honest man, I believe.
Jack, as far as I know, isn’t clever.
（二）插入語(yǔ)的位置
通常插入語(yǔ)位于句中，并用逗號(hào)隔開(kāi)。但有時(shí)，也可位于句首或句末（見(jiàn)上面例句）。也有時(shí)，并不用逗號(hào)隔開(kāi)。
e.g. You know that I think you are wrong. 我認(rèn)為，你明白你錯(cuò)了。
What on earth do you mean? 你究竟是什么意思？
（三）插入語(yǔ)在句中的作用
一般來(lái)說(shuō)，插入語(yǔ)在句中不起主要作用。如果把插入語(yǔ)抽去，句子的含義不大受影響。但是，有的插入語(yǔ)卻是句子不可缺少的一部分。
e.g. He got the news from nobody knows where. 他這消息誰(shuí)也不知道是從哪兒得來(lái)的。
（四）插入語(yǔ)的特殊用法
下面這種復(fù)雜的特殊疑問(wèn)句，也可認(rèn)為包含有“插入語(yǔ)”。這種疑問(wèn)句（有的語(yǔ)法書(shū)也稱(chēng)為“混合疑問(wèn)句”或“連鎖疑問(wèn)句”）常用來(lái)征詢(xún)對(duì)方對(duì)某一疑問(wèn)點(diǎn)的看法、判斷、認(rèn)識(shí)、猜度或請(qǐng)求對(duì)方重復(fù)一遍說(shuō)過(guò)的話(huà)�？谡Z(yǔ)中出現(xiàn)頻率極高。常用動(dòng)詞有say, suppose, guess, believe, consider, think, imagine 等。
e.g. How long did you say she would stay here?
When do you suppose they’ll be back?
How old did you think she was
（五）大綱中要求掌握的常用作插入語(yǔ)的詞語(yǔ)
by the way 順便說(shuō)，順便問(wèn)一下；so far 到目前為止；and so on 等等；on the contrary 相反； no wonder 不足為奇；as a matter of fact 事實(shí)上；come along 快點(diǎn)，來(lái)吧；in other words 換句話(huà)說(shuō)；as usual 如同以往；as a result 因此，結(jié)果。
練習(xí)二、省略和插入語(yǔ)
1. ---- Won’t you have another try? ---- ____.
A. Yes, I will B. Yes, I won’t C. Yes, I will have D. Yes, I won’t have
2. ---- I won’t do it any more. ---- ____?
A. Why don’t B. Why don’t do it any more C. Why not D. Why not do
3. ---- Do you think it will snow tomorrow? ---- ____.
A. No, I don’t think B. I don’t think C. No, I don’t so D. I don’t think so
4. ---- Will he fail in the exam? ---- ____.
A. Don’t hope to B. Let’s hope not C. Not hope so D. Let’s hope not to
5. ____ usual, I have forgotten something.
A. As B. As it is C. It’s D. That is
6. ____ she a man, she might be elected president.
A. If B. Unless C. Was D. Were
7. ____ I had time, I would have played it again.
A. If B. Unless C. Had D. When
8. ____ it rain tomorrow, I’d stay at home.
A. Should B. Would C. When D. If
9. I like sports and ____ my brother.
A. so B. so does C. so is D. so likes
10. Francis, ____ born in Kentucky, lived and practised law in Missouri.
A. was B. He was C. who is D. although
11. ---- Aren’t you the manager? ---- No, and I ____.
A. don’t want B. don’t want to C. don’t want to be D. don’t
12. ---- Have you fed the dog? ---- No, but ____.
A. I am B. I’m just going to C. I’m D. I’m just going
13. Your performance in the driving test didn’t reach the required standard（標(biāo)準(zhǔn)） - ____, you failed.
A. in the end B. after all C. in other words D. at the same time
14. How long ____ she would stay here?
A. did she say B. she said C. did D. /
15. ____ could do such thing?
A. Whom do you think B. Who do you think C. Do you think whom D. Did you think who
練習(xí)三、綜合訓(xùn)練
1. John was ill. Have you heard about ____?
A. this B. he C. it D. the one
2. Hurry up! ____ getting darker and darker.
A. The sky is B. It’s C. Weather is D. Time is
3. It’s the third time ____ I have been here.
A. that B. when C. after D. who
4. It was simply for that reason ____ I wouldn’t tell him the truth.
A. why B. which C. so D. that
5. Was it in the place ____ the last emperor died?
A. where B. that C. which D. in which
6. ____ is no difference between A and B.
A. It B. Where C. There D. What
7. It ____ Mike and Mary who helped the old man several days ago.
A. was B. were C. are D. had been
8. He said, “ ____ a long way to school. ____ a long way to go yet before we arrive.”
A. It is, It is B. There is, There is C. There is, It is D. It is, There is
9. I don’t like ____ you speak to her.
A. the way B. the way in that C. the way which D. the way of which
10. If you go to Xi’an, you’ll find the palaces there more magnificent than commonly ____.
A. supposing B. suppose C. to suppose D. supposed
11. ____ is a fact that English is being accepted as an international language.
A. There B. This C. That D. It
12. It was about 600 years ago ____ the first clock with a face and an hour hand was made.
A. that B. until C. before D. when
13. It was not until 1920 ____ regular radio broadcast began.
A. while B. which C. that D. since
14. ---- Do you mind my taking this seat? ---- ____. A. Yes, sit down please B. No, of course not C. Yes, take it please D. No, you can’t take it
15. ---- I’ll be away on a business trip. Would you mind looking after my cat? --- Not at all. ____.
A. I’ve no time B. I’d rather not C. I’d like it D. I’d be happy to
16. The boy wanted to ride his bicycle in the street, but his mother told him _____.
A. not to B. not to do C. not do it D. do not to
17. It was not until she came to see us ____ her mother was ill in bed.
A. when we knew B. that did we knew C. that we knew D. that did we know
18. ---- This store has such high prices. ---- I agree. Never again ____ here.
A. I will shop B. will I shop C. I do shop D. shop I
19. ____ was his kindness that everyone praised him.
A. It B. What C. So D. Such
20. ____, he would have passed the exam.
A. If he were to study B. If he studied hard C. Had he studied hard D. Should he study hard
21. ---- David has made great progress recently. ---- ____, and ____. A. So he has, so have you B. So he has, so you have C. So has he, so have you D. So has he, so you have
22. No sooner ____ they rushed out into the street. A. did they hear the news than
B. did they hear the news when C. had they heard the news than D. had they heard the news when
23. He was unable to make such progress, ____.
A. hard as he tried B. as hard he tried C. hard he has tried D. tried hard as he