1、It的特殊用法小結應用學科：英語應用學段：高中通用CONTENTS01020304目錄人稱代詞非人稱代詞形式主語、形式賓語其他用法人稱代詞1.基本用法，指代無生命的或者動物“它”2.指代不知道性別的嬰兒非人稱代詞指時間指日期指距離指天氣It was nearly midnight when she came back. It is a lovely day, isnt it? It is April First today. It is some 3000 kilometers from Beijing to Guangzhou. 非人稱代詞指價值指溫度It is three dollars.

2、 Today it is 30 degrees centigrade.形式主語、形式賓語It be+said (reported/believed/known/told/ thought/hoped) +that 從句常譯為據說（據報道）important ( necessary，right，strange，natural.) that clear ( obvious, true, possible，certain.) that從句 作形式主語，替代主語從句It is very clear that hes round and tall like a tree. It is necessary

3、 that he (should) remember these words.It is said that he has come to Beijing. suggested ( advised/ ordered / demanded/ insisted/ commanded. ) that 從句.that后的從句要用虛擬語氣（should +動詞原形）should 可以省；常譯為據建議；有命令）It is suggested that the meeting( should ) be put off. 其他用法1.It is time ( about time 、high time ) t

4、hat從句(虛擬語氣動詞用did/had done/should do) It is time that children went to bed. It is time you bought a new car. It is (high ) time you made up your mind. 2.It is the first ( second . ) time that從句(從句用現在完成時have done ) It was the first ( second . ) time that從句(從句用過去完成時had done )常譯為是第一（二）次。It is the first

5、time I have been here. = This is the first time I have been here.3.It is no good / no use / useless doing sth. 常譯為“有好處或沒有用”It is no good learning English without speaking English. Its useless trying to argue with Shylock. It takes sb. . to do sth. It is kind ( of sb. ) to do sth. It is necessary ( f

6、or sb. ) to do sth. .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褒義或貶義形容詞。常見的詞有：bad ,brave ，careless，clever，cruel，foolish，good（好心的），honest，horrible，kind ，lazy，modest ，naughty ，nice（有教養的），polite，rude，silly ，stupid ，wise ，wrong（錯誤的）等。這個句型可以改寫為：sb. is kind to do sth. 如:It is kind of you to say so. = You are kin

7、d to say so. 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，緊迫性，頻繁程度，難易，安全等情況的中性形容詞。常見的形容詞有：important，necessary，natural easy ，safe ，common ，normal ，hard ，difficult ，dangerous ，unusual，rare ，impossible ，pleasant 如:It is important for her to come to the party. = It is important that she (should ) come to the party.

8、It took thousands of people many years to build the Great Wall.作形式主語替代不定式作形式主語替代動名詞短語It is no good / no use / useless doing sth. 常譯為“有好處或沒有用”It is no good learning English without speaking English. Its useless trying to argue with Shylock. 作形式賓語該句型中的it 作形式賓語，該結構中常用的動詞有：think, believe, make ,find, co

9、nsider, feel如We think it our duty to clean our classroom every day. He felt it important learning English well. They found it difficult that they would finish their work in two days. The Internet makes it easier for companies to keep in touch with customers.重要句型1.強調句型It is/was 被強調部分+ that 從句(被強調的主語如

10、果是人，that可以由who換用)It is not until + 被強調部分+ that . It was they that (who ) cleaned the classroom yesterday. It was not until she took off her dark glasses that I realized she was a famous film star. 重要句型鞏固提升單句改錯1.It took us over an hour walk along the street. 2.I think it a great honour to invite visit your country. 3.Man