where ______the recorder?i can not see it anywhere
问题描述：
where ______the recorder?i can not see it anywhere
i_______it right here.but now it is gone
A)did you put,have put
B)have you put,put
C)had you put,was putting
D)were you putting,have put
说明选择的原因,为什么不能选A
2)a quarrel______between the two boys
a)broke out
B)was broken out
C)is breaking out
D)is broken out
请说明选择的原因,为什么不能选B和D
答
（1）选B
现在完成时的用法之一：过去的事对现在有影响.
题目中,“ i can not see it anywhere”就是“where have you put the recorder?”所产生的影响,故用现在完成时.
如果没有i can not see it anywhere,用一般过去时也没关系.
再看看下一句：“i put it right here”用的是过去时,“but now it is gone”并不是“i put it right here”所造成,故用一般过去时.
（2）选A
B,D是被动语态,而break out是没有被动词态,想一想,quarrel并不是“被”发生的,这样就容易理解了.