Unit 3 A healthy li fe
语法探究
it 的用法
一.代词it
1.用作人称代词,代替上文提到的事物
My pen is miss ing.I can’t find it anywhere.
2.用来代替指示代词this,that
—W hose umbrella is this? —It’s mine.
3.用作非人称代词,表示时间,日期,地点,温度,距离,环境等.
It’s time for the meeting.
It’s a beautiful day here.
二.引导词it
1.用作形式主语,代替不定式,-ing形式或从句表示的真正主语.
It’s no use crying over spilt milk.
2.用作形式宾语,代替不定式,-ing形式或从句表示的真正宾语.在think,make,believe,consider,take,find,feel等动词后跟复合宾语时,多用it作形式宾语.
I think it no use arguing with hi m.
