12. I haven't finished my composition. I ___b___ for two hours and a half.
来源:百度知道 编辑:UC知道 时间:2024/06/24 19:17:30
12. I haven't finished my composition.I ___b___ for two hours and a half.
A. have written it B. have been writing it
C. wrote it D. am writting it
为什么选B?
A. have written it B. have been writing it
C. wrote it D. am writting it
为什么选B?
因为B的形式是过去完成进行式,意思是,两个小时前就已经开始写了,一直写到现在还没写完,这个过程一直在写在进行。
A是完成时,很显然没写完,所以不能选,
C是两小时前写了,但表示不出来到现在一直在写着,
D是现在进行式,是现在正在写,他是过去开始写的,不是现在。