It 的用法
1.作人称代词
John likes playing Pingpong./ He always does it in the afternoon.(指代上下文提到的事物);/ Its time we went home. / How far is it from here to your home ? / It is getting warmer and warmer./ Its very quiet at the moment.(可指时间、天气、环境等)
2.引导词
A.作形式主语,代替由不定式、动名词或从句表示的真正主语。
Its important for us to learn a second language./ Its no use talking to him./ Its known to all that the earth goes round the sun.
B.作形式宾语,代替由不定式、动名词或从句表示的真正宾语。
We feel it our duty to help others./ He made it clear that he would leave the city.
C.强调结构:It is (was) +被强调部分+that (或who)
注意: 在强调结构中,如被强调部分为时间状语或地点状语,其后的连接词也绝不能为when 或where,而应用that 。在复习中,一定要注意句式的不同。
It was in Shanghai that I bought the guitar.(that引起强调句)
It was Shanghai where I bought the guitar.(where引起定从)
It was twelve oclock when we arrived there.(when引起时间状语从句)
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2016-02-29
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