用since,for,ago填空 1.he stayed with us ( ) two weeks.2.she arrived two weeks ( )3.i have not seen him ( ) monday.4.he has been ringing up continually ( ) lunchtime.5.we waited ( ) ages.6.he left a month ( ) and i have not seen him ( ) then.7.it h

用since,for,ago填空 1.he stayed with us ( ) two weeks.2.she arrived two weeks ( )3.i have not seen him ( ) monday.4.he has been ringing up continually ( ) lunchtime.5.we waited ( ) ages.6.he left a month ( ) and i have not seen him ( ) then.7.it h
用since,for,ago填空 1.he stayed with us ( ) two weeks.2.she arrived two weeks ( )
3.i have not seen him ( ) monday.4.he has been ringing up continually ( ) lunchtime.5.we waited ( ) ages.6.he left a month ( ) and i have not seen him ( ) then.7.it has not rained ( ) march.8.my grandparents lived here a long time ( ).9.i have not heard from him ( )1993.10.we have been working on this new plane ( ) over a year now.

用since,for,ago填空 1.he stayed with us ( ) two weeks.2.she arrived two weeks ( )3.i have not seen him ( ) monday.4.he has been ringing up continually ( ) lunchtime.5.we waited ( ) ages.6.he left a month ( ) and i have not seen him ( ) then.7.it h
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1.for
2.ago
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1.he stayed with us (for ) two weeks.
2.she arrived two weeks (ago )
3.i have not seen him ( since ) monday.
4.he has been ringing up continually ( since ) lunchtime.

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1.he stayed with us (for ) two weeks.
2.she arrived two weeks (ago )
3.i have not seen him ( since ) monday.
4.he has been ringing up continually ( since ) lunchtime.
5.we waited ( for ) ages.
6.he left a month ( ago ) and i have not seen him ( since ) then.
7.it has not rained ( since ) march.
8.my grandparents lived here a long time ( ago ).
9.i have not heard from him ( since )1993.
10.we have been working on this new plane ( for ) over a year now.

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for，ago，since，since，for，ago，since，since，ago，since，for

since 后加具体的时间，“自从。。。”，一般用于现在完成时，如since Monday
for后加一段时间，如一般用于现在完成时，如.he stayed with us ( for) two weeks，他和我们呆了两周。
ago前加一段时间，“。。。之后”，常用于一般过去时，如a few days ago
（课堂笔记）
其他就自己推吧...

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since 后加具体的时间，“自从。。。”，一般用于现在完成时，如since Monday
for后加一段时间，如一般用于现在完成时，如.he stayed with us ( for) two weeks，他和我们呆了两周。
ago前加一段时间，“。。。之后”，常用于一般过去时，如a few days ago
（课堂笔记）
其他就自己推吧

收起