英語高頻考點(diǎn):it的用法
2019-05-22 11:03:03網(wǎng)絡(luò)資源
1、It除了代替人和物以外,還可以作形式主語.而真正的主語(不定式、動(dòng)名詞或從句)則放于謂語或表語之后.
例如:It is nor easy to finish the work in two days.
然而有少數(shù)表語之后接動(dòng)名詞作真正的主語.這些表語是:無助(no help)、無用(no use)、沒好處(no good);工作(hard work)、費(fèi)時(shí)(a waste of time)、又危險(xiǎn)(a danger).
例如:A、It is no use crying over spilt milk.
B、It is a waste of time waiting for him.
2、It還可以作形式賓語.通常下列動(dòng)詞后面可接it作形式賓語:2f2tcjm(find,feel,think,take,consider,judge, make).
例如:A、He made it clear that he was not interested in this subject.
B、I think it no use arguing with him.
3、It用于強(qiáng)調(diào)句式.要強(qiáng)調(diào)句子的某一部分(主語、賓語、 狀語),可以把it當(dāng)作先行詞.這種句子的結(jié)構(gòu)是:It is(was)+ 被強(qiáng)調(diào)部分+that(who)+句子的其余部分.
例如:A、It iS Professor Lin who teaches us English—(強(qiáng)調(diào)主語)
B、It was in Shanghai that l saw the film.—(強(qiáng)調(diào)狀語)
C、It was in 1990 that I worked in the factory.(同上)
但要注意與定語從句的區(qū)別.
例如:D、It was 1990 when I worked in the factory.(定語從句)
在強(qiáng)調(diào)句式里,我們把強(qiáng)調(diào)結(jié)構(gòu)It is(was)…that除去,句子還很完整.如例句C.而例句D就不能.
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