關(guān)于it的句型

1、 關(guān)于it的句型1. It is + 被強(qiáng)調(diào)部分 + that . 該句型是強(qiáng)調(diào)句型。將被強(qiáng)調(diào)的部分放在前面，其它部分置于that之后。被強(qiáng)調(diào)部分可以是主語，賓語，表語或狀語。強(qiáng)調(diào)的主語如果是人，that可以由who換用。如果把這種句型結(jié)構(gòu)劃掉后，應(yīng)該是一個(gè)完整無缺的句子。這也是判斷強(qiáng)調(diào)句型與其它從句的方法。It was about 600 years ago that the first clock with a face and an hour hand was made. It was they that (who ) cleaned the classroom yesterday. I

2、t was in the street that I met her father.2. It is not until + 被強(qiáng)調(diào)部分 + that .該句型也是強(qiáng)調(diào)句型。主要用于強(qiáng)凋時(shí)間狀語，譯成漢語直到才，可以說是 not . until . 的強(qiáng)調(diào)形式。 It was not until she took off her dark glasses that I realized she was a famous film star. = Not until she took off her dark glasses did I realize she was a famous film

3、 star. = I didnt realize she was a famous film star until she took off her dark glasses.3. It is clear ( obvious, true, possible, certain.) that . 該句型中it 是形式主語，真正的主語是that 引導(dǎo)的主語從句，常譯為清楚（顯然，真的，肯定）是主語從句最常見的一種結(jié)構(gòu)。It is very clear that hes round and tall like a tree.= That hes round and tall like a tree i

4、s very clear.4. It is important ( necessary, right, strange, natural.) that .該句型和上一個(gè)同屬一個(gè)句型。由于主句中的形容詞不同，that 后的從句中要用虛擬語氣（should + 動(dòng)詞原形），should 可以省去。建議記住該句型中的形容詞。It is important that we (should) learn English well.It is necessary that he (should) remember these words.5. It is said (reported, learned.)

5、 that .該句型中的it 仍是形式主語，真正主語是that 引導(dǎo)的主語從句。該結(jié)構(gòu)常譯為據(jù)說（據(jù)報(bào)道，據(jù)悉）。It is said that he has come to Beijing.It is reported that another earth satellite has been put into orbit.6. It is suggested ( ordered . ) that .該句型和上一個(gè)同屬一個(gè)句型。主句中的過去分詞是表示請求，建議，命令等詞時(shí)，that后的從句要用虛擬語氣（should + 動(dòng)詞原形），should 可以省。常譯為據(jù)建議；有命令）It is su

6、ggested that the meeting ( should ) be put off.It was ordered that we ( should ) arrive there in two hours.7. It is a pity ( a shame . ) that .該句型中，that后的從句一般用虛擬語氣（should + 動(dòng)詞原形），should可省去表示出乎意料，常譯為竟然。沒有這種意義時(shí)，則不用虛擬語氣。It is a pity that such a thing ( should ) happen in your class.這種事竟然發(fā)生在你們班上，真是遺憾！It

7、 is a pity that he is ill. 他生病了，真遺憾！8. It is time ( about time ,high time ) that .該句型中that 后的從句應(yīng)該用虛擬語氣，值得注意的是 常用過去時(shí)態(tài)表示虛擬 有時(shí)也用should + 動(dòng)詞原形，should 不能省。常譯為是（正是）的時(shí)侯。It is time that children should go to bed.= It is time that children went to bed.9. It is the first ( second . ) time that .該句型要和上一個(gè)句型區(qū)別開來

8、。該句型中的 that 從句不用虛擬語氣，而用完成時(shí)態(tài)。至于用什么完成時(shí)態(tài)，由主句的謂語動(dòng)詞的時(shí)態(tài)決定。如果是一般現(xiàn)在時(shí)，后面從句用現(xiàn)在完成時(shí)態(tài)；如果是一般過去時(shí)，后面從句則用過去完成時(shí)態(tài)。該結(jié)構(gòu)中 that 可以省去；it有時(shí)用 this 替換常譯為是第一（二）次。It is the first time I have been here.= This is the first time I have been here.10. It is . since .該句型主要用作處理瞬間動(dòng)詞的完成時(shí)，又要和表示一段時(shí)間的時(shí)間狀語連用的問題。主句中是時(shí)間作表語，其時(shí)態(tài)是現(xiàn)在時(shí)或完成時(shí)，since 引

9、導(dǎo)的從句通常是一般過去時(shí)態(tài)，而且是瞬間動(dòng)詞。如果主句是一般過去時(shí)，從句則用過去完成時(shí)。It is ( has been ) 5 years since his father died. 11. It is . when .該句型中的 when 引導(dǎo)的是一個(gè)時(shí)間狀語從句，主句中的 it 指時(shí)間，表語由具體的時(shí)間充當(dāng)。常譯為當(dāng)?shù)臅r(shí)候，是。It was 5 oclock when he came here.12. It be . before .該句型主句中的 it 指時(shí)間, 主句中的時(shí)態(tài)常是將來一般時(shí)或過去時(shí)兩種時(shí)態(tài)主句中的表語多是long, not long , 3 days , 2 weeks

10、 等表示時(shí)間段的詞或短語。常譯為之后。It was 3 days before he went to Beijing.It will be not long before he finishes his job.13. It happens (seems, looks, appears ) that. 該句型中it是形式主語，that 引導(dǎo)的是主語從句，主句中的happen , seem等詞是不及物動(dòng)詞It happened ( so happened ) that he met his teacher in the street. 碰巧It seems that he will be bac

11、k in a few days. 看來 14. It takes sb. . to do sth.該句型中的不定式是真正的主語，it是形式主語，句型中的直接賓語是時(shí)間。常譯為做要花費(fèi)某人。It took thousands of people many years to build the Great Wall.15. It is no good (use ) doing sth.該句型中的真正主語是動(dòng)名詞短語，主句中的表語可以是no good , ( not any good ) , no use , ( not any use )。It is no good learning Englis

12、h without speaking English.16. It doesnt matter whether ( if ) . 該句型中whether(if) 引導(dǎo)的從句是真正主語，該句型常譯為不論（是否）沒關(guān)系。It doesnt matter if they are old.17. It is kind ( of sb. ) to do sth. 該句型中的不定式短語是真正主語，如果不定式的邏輯主語是由 of引起，主句中的形容詞必須是能表示邏輯主語特征的形容詞。常見的有： bad , brave , careless, clever , cruel , foolish , good （好

13、心的）, honest , horrible , kind , lazy , modest , naughty , nice（有教養(yǎng)的）, polite, rude , silly , stupid , wise , wrong（錯(cuò)誤的）等。 這個(gè)句型可以改寫為：sb. is kind to do sth. It is kind of you to say so. = You are kind to say so. 18. It is necessary ( for sb. ) to do sth. 該句型與上一個(gè)同屬一個(gè)句型。如果不定式的邏輯主語是由for引起，主句中的形容詞通常是表示重要性

14、，緊迫性，頻繁程度，難易，安全等情況的形容詞。常見的形容詞有： important, necessary, natural easy , safe , common , normal , hard , difficult , dangerous , unusual, rare , impossible , pleasant等。在中的形容詞作表語可以用從句改寫， 如：It is important for her to come to the party.= It is important that she (should ) come to the party19. It looks ( se

15、ems ) as if .該句型中it無意義。 as if 引導(dǎo)一個(gè)狀語從句。常譯為，看起來好象如果與事實(shí)不相符合，則用虛擬語氣It looks as if he is ill.（真的病了）It looks as if he were ill. （沒有生病）It seemed as if he were dying. 20. We think it important to learn a foreign language. 該句型中的it 作形式賓語。為了記憶方便我們可稱該句型為"6123結(jié)構(gòu)"。6指主句中常用的動(dòng)詞：think, believe, make, find, consider, fee