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问题: 英语选择题

1、My friend ____ in the army for 10 years.

A is served B is serving C has been servedD served

答案是:D 请问为什么?这不是个完成时态吗?

2、The classroom is big enough ____ ,but we will have to move if we have more students.

A for the morment B on the morment
C in a morment D for a morment

请问各个短语的意思及用法。

谢谢

解答:

1、My friend ____ in the army for 10 years.

A is served B is serving C has been servedD served

答案是:D 请问为什么?这不是个完成时态吗?
是的,一段时间可以和现在完成时连用,但是不是一段时间都是和现在完成时态连用,可以和一般过去时连用,只是说明过去的一种情况。
本身就是一个主动,所以不能用被动了

2、The classroom is big enough ____ ,but we will have to move if we have more students.

A for the moment 暂时;目前 就选择这个了
B on the moment 没见过这个短语
C in a moment 立刻 马上
D for a moment 一会儿


参考文献:个人观点