高二英語(yǔ)瀏覽it句型PPT課件

1、 研究一下近年來的高考試卷可以發(fā)現(xiàn)，含 it 的句型幾乎年年考到?？梢?it 句型的重要性和使用的普遍性?，F(xiàn)根據(jù)其用法特點(diǎn)可歸納為下列幾個(gè)句型。 第1頁(yè)/共12頁(yè)1. 1. It is + It is + 被強(qiáng)調(diào)部分被強(qiáng)調(diào)部分 + + that .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 that 之后。被強(qiáng)調(diào)部之后。被強(qiáng)調(diào)部分可以是主語(yǔ)，賓語(yǔ)，表語(yǔ)或狀語(yǔ)。強(qiáng)調(diào)的主語(yǔ)如果是人，分可以是主語(yǔ)，賓語(yǔ)，表語(yǔ)或狀語(yǔ)。強(qiáng)調(diào)的主語(yǔ)如果是人，that that 可以由可以由 who who 換用。如果換用。如果把這種句

2、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。的方法。 It was It was about 600 years agoabout 600 years ago that the first clock with a face and an hour hand that the first clock with a face and an hour hand was made. was made. It was It was theythey that (who ) cleaned the

3、 classroom yesterday. that (who ) cleaned the classroom yesterday. It was It was in the streetin the street that I met her father. that I met her father. 第2頁(yè)/共12頁(yè)2. 2. It is not until + It is not until + 被強(qiáng)調(diào)部分被強(qiáng)調(diào)部分 + + that .that . 該句型也是強(qiáng)調(diào)句型。主要用于強(qiáng)凋時(shí)間狀語(yǔ)，譯成漢語(yǔ)該句型也是強(qiáng)調(diào)句型。主要用于強(qiáng)凋時(shí)間狀語(yǔ)，譯成漢語(yǔ) “直到直到才才”，可，可以說是以說

4、是 not . until . not . until . 的強(qiáng)調(diào)形式。的強(qiáng)調(diào)形式。 It was It was not until she took off her dark glassesnot until she took off her dark glasses that I realized she was a famous that I realized she was a famous film star.film star.= = Not until she took off her dark glasses Not until she took off her dark gl

5、asses did Idid I realize she was a famous film realize she was a famous film star.star.= = I I didntdidnt realize she was a famous film star realize she was a famous film star untiluntil she took off her dark glasses. she took off her dark glasses. 3. 3. It is clear ( obvious, true, possible, certai

6、nIt is clear ( obvious, true, possible, certain) that ) that 該句型中該句型中it it 是形式主語(yǔ)，真正的主語(yǔ)是是形式主語(yǔ)，真正的主語(yǔ)是 that that 引導(dǎo)的主語(yǔ)從句，常譯為引導(dǎo)的主語(yǔ)從句，常譯為 “ 清楚（顯清楚（顯然，真的，肯定然，真的，肯定）”是主語(yǔ)從句最常見的一種結(jié)構(gòu)。是主語(yǔ)從句最常見的一種結(jié)構(gòu)。 It is very clear that hes round and tall like a tree. It is very clear that hes round and tall like a tree. = =

7、That hes round and tall like a tree is very clear. That hes round and tall like a tree is very clear. 第3頁(yè)/共12頁(yè)4. 4. It is It is important ( necessary, right, strange, naturalimportant ( necessary, right, strange, natural.) that .) 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，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 that

8、后的從句中要用虛擬后的從句中要用虛擬語(yǔ)氣（語(yǔ)氣（should + should + 動(dòng)詞原形動(dòng)詞原形），），should should 可以省去。建議記住該句型中的形容詞?？梢允∪?。建議記住該句型中的形容詞。 It is important that we (should) learn English well. It is important that we (should) learn English well. It is necessary that he (should) remember these words. It is necessary that he (should) r

9、emember these words. 5. 5. It is said (reported, learnedIt is said (reported, learned) that ) that 該句型中的該句型中的it it 仍是形式主語(yǔ)，真正主語(yǔ)是仍是形式主語(yǔ)，真正主語(yǔ)是 that that 引導(dǎo)的主語(yǔ)從句。該結(jié)構(gòu)常譯為引導(dǎo)的主語(yǔ)從句。該結(jié)構(gòu)常譯為“ 據(jù)據(jù)說（據(jù)報(bào)道，據(jù)悉說（據(jù)報(bào)道，據(jù)悉）”。 It is said that he has come to Beijing. It is said that he has come to Beijing. It is reported tha

10、t another man-made satellite has been put into orbit It is reported that another man-made satellite has been put into orbit第4頁(yè)/共12頁(yè)7. 7. It is a pity ( a shame . ) that .It is a pity ( a shame . ) that . 該句型中，該句型中，that that 后的從句一般用虛擬語(yǔ)氣（后的從句一般用虛擬語(yǔ)氣（should + should + 動(dòng)詞原形），動(dòng)詞原形），should should 可省可省去表示出

11、乎意料，常譯為去表示出乎意料，常譯為“竟然竟然”。沒有這種意義時(shí)，則不用虛擬語(yǔ)氣。沒有這種意義時(shí)，則不用虛擬語(yǔ)氣。 It is a pity that such a thing ( should ) happen in your class. 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！這種事竟然發(fā)生在你們班上，真是遺憾！ It is a pity that he is ill. It is a pity that he is ill. 他生病了，真遺憾！他生病了，真遺憾！

12、6. 6. It is It is suggested ( ordered, requiredsuggested ( ordered, required . ) that . . ) 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(qǐng)求，建議，命令等詞時(shí)，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(qǐng)求，建議，命令等詞時(shí)，that that 后的從句要用虛擬語(yǔ)氣（后的從句要用虛擬語(yǔ)氣（should + should + 動(dòng)詞原形），動(dòng)詞原形），should should 可以省。常譯為可以省。常譯為“ 據(jù)建議；據(jù)建議；有命令有命令）”。 It is suggested t

13、hat the meeting It is suggested that the meeting ( should ) be( should ) be put off. put off. It was ordered that we It was ordered that we ( should ) arrive( should ) arrive there in two hours. there in two hours. 第5頁(yè)/共12頁(yè)8. 8. It is time ( about time , high time ) that .It is time ( about time , h

14、igh time ) that . 該句型中該句型中that that 后的從句應(yīng)該用虛擬語(yǔ)氣，值得注意的是后的從句應(yīng)該用虛擬語(yǔ)氣，值得注意的是 常用過去時(shí)態(tài)表示虛常用過去時(shí)態(tài)表示虛擬擬 有時(shí)也用有時(shí)也用should + should + 動(dòng)詞原形，動(dòng)詞原形，should should 不能省。常譯為不能省。常譯為“是（正是）是（正是）的時(shí)的時(shí)侯侯”。 It is time that children should go to bed. It is time that children should go to bed. = It is time that children = It is t

15、ime that children wentwent to bed. to bed. 9. 9. It is the first ( second It is the first ( second ) time that ) time that 該句型要和上一個(gè)句型區(qū)別開來。該句型中的該句型要和上一個(gè)句型區(qū)別開來。該句型中的 that that 從句不用虛擬語(yǔ)氣，而用完成時(shí)態(tài)。從句不用虛擬語(yǔ)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(yǔ)動(dòng)詞的時(shí)態(tài)決定。如果是一般現(xiàn)在時(shí)，后面從句用至于用什么完成時(shí)態(tài)，由主句的謂語(yǔ)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

16、從句則用過去完成時(shí)態(tài)。該結(jié)構(gòu)中現(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 that 可以省可以省去；去；it it 有時(shí)用有時(shí)用 this this 替換，常譯為替換，常譯為“是第一（二）是第一（二）次次”。 It is the first time It is the first time I have beenI have been here. here. = = This is the first time This is the first time I have beenI have been here. here. 第6頁(yè)/共12頁(yè)10. It i

17、s 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(yǔ)連用的問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(yǔ)連用的問題。主句中是時(shí)間作表語(yǔ)，其時(shí)態(tài)是現(xiàn)在時(shí)或完成時(shí)，題。主句中是時(shí)間作表語(yǔ)，其時(shí)態(tài)是現(xiàn)在時(shí)或完成時(shí)，since 引導(dǎo)的從句通常是一般過去引導(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)。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 . 該句型中的該

18、句型中的 when 引導(dǎo)的是一個(gè)時(shí)間狀語(yǔ)從句，主句中的引導(dǎo)的是一個(gè)時(shí)間狀語(yǔ)從句，主句中的 it 指時(shí)間，表語(yǔ)由具體的指時(shí)間，表語(yǔ)由具體的時(shí)間充當(dāng)。常譯為時(shí)間充當(dāng)。常譯為“當(dāng)當(dāng)?shù)臅r(shí)候，是的時(shí)候，是”。 It was 5 oclock when he came here. 12. It be . before . 該句型主句中的該句型主句中的 it 指時(shí)間指時(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(yǔ)多是的表語(yǔ)多是long, not long , 3 days , 2 weeks 等表示時(shí)間段的詞或短語(yǔ)。常譯為等表示時(shí)間段的詞或短語(yǔ)

19、。常譯為“之后之后”。 It was 3 days before he went to Beijing. It will be not long before he finishes his job. 第7頁(yè)/共12頁(yè)13. It happens (seems, looks, appears ) that. 該句型中該句型中it是形式主語(yǔ)，是形式主語(yǔ)，that 引導(dǎo)的是主語(yǔ)從句，主句中的引導(dǎo)的是主語(yǔ)從句，主句中的happen, seem 等詞是不等詞是不及物動(dòng)詞及物動(dòng)詞 It happened ( so happened ) that he met his teacher in the str

20、eet. 碰巧碰巧 It seems that he will be back in a few days. 看來看來 14. It takes sb. to do sth. 該句型中的不定式是真正的主語(yǔ)，該句型中的不定式是真正的主語(yǔ)，it是形式主語(yǔ)，句型中的直接賓語(yǔ)是時(shí)間。常譯為是形式主語(yǔ)，句型中的直接賓語(yǔ)是時(shí)間。常譯為“做做要花費(fèi)某人要花費(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(yǔ)是動(dòng)名詞短語(yǔ)，主句中的表語(yǔ)

21、可以是該句型中的真正主語(yǔ)是動(dòng)名詞短語(yǔ)，主句中的表語(yǔ)可以是no good , ( not any good ) , no use , ( not any use )。 It is no good learning English without speaking English. 第8頁(yè)/共12頁(yè) 該句型中該句型中whether (if) 引導(dǎo)的從句是真正主語(yǔ)，該句型常譯為引導(dǎo)的從句是真正主語(yǔ)，該句型常譯為“不論（是否）不論（是否） 沒關(guān)系沒關(guān)系。 It doesnt matter if they are old. 該句型中的不定式短語(yǔ)是真正主語(yǔ)，如果不定式的邏輯主語(yǔ)是由該句型中的不定式短語(yǔ)是真

22、正主語(yǔ)，如果不定式的邏輯主語(yǔ)是由 of 引起，主句中的引起，主句中的形容詞必須是能表示邏輯主語(yǔ)特征的形容詞。常見的有形容詞必須是能表示邏輯主語(yǔ)特征的形容詞。常見的有: bad, brave, careless, clever, cruel, foolish, good (好心的好心的), honest, horrible, kind, lazy, modest, naughty, nice (有有教養(yǎng)的教養(yǎng)的), polite, rude, silly, stupid, wise, wrong (錯(cuò)誤的錯(cuò)誤的)等。等。 這個(gè)句型可以改寫為：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. 第9頁(yè)/共12頁(yè)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(yǔ)是由該句型與上一個(gè)同屬一個(gè)句型。如果不定式的邏輯主語(yǔ)是由for 引起，主句中的形容引起，主句中的形容詞通常是表示重要性，緊迫性，頻