Question

几题英语选择题...

1.-May I sit here? -No,you _____.Your seat is over there. A.couldn't B.needn't C. mustn't D.won't (麻烦解释下什么时候couldn't回答,什么时候是needn't,什么时候用mustn't,什么时候用won't...老是搞不清楚...) 2.-When will you come here? -_____ July 11. A.On B.At C.In (也请说下什么时候用in,什么时候用at,什么时候用on) 3.Where is my bag?I _____ it here but now I can't find it. A.put B.have just put C.was putting (解释下为什么)

Answer 1

9、这里题目问你哪一个选项是错的。a必须改为：look
it
up
in
a
dictionary。
10、这里不是时态，而是现在分词，作宾语补足语。
11、until用于肯定句时，意思是“直到......为止”，不合句意。