语法复习十六:代词It的用法1.作人称代词JohnlikesplayingPingpong./Healwaysdoesitintheafternoon.(指代上下文提到的事物);/It'stimewewenthome
/Howfarisitfromheretoyourhome
/Itisgettingwarmerandwarmer./It'sveryquietatthemoment.(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
It'simportantforustolearnasecondlanguage./It'snousetalkingtohim./It'sknowntoallthattheearthgoesroundthesun.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
Wefeelitourdutytohelpothers./Hemadeitclearthathewouldleavethecity.C.强调结构:Itis(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
ItwasinShanghaithatIboughttheguitar.(that引起强调句)ItwasShanghaiwhereIboughttheguitar.(where引起定从)Itwastwelveo'clockwhenwearrivedthere.(when引起时间状语从句)Itwasattwelveo'clockthatwearrivedthere.(that引起强调句)3
it,one,that的区别:作为代词,