Ever since Bob______a little child ,he _____afraid of dark.A.was;has been B.has been.was C.was;was D has been;has been为什么答案是选A?为什么不选B?去解析

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Ever since Bob______a little child ,he _____afraid of dark.A.was;has been B.has been.was C.was;was D has been;has been为什么答案是选A?为什么不选B?去解析
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Ever since Bob______a little child ,he _____afraid of dark.A.was;has been B.has been.was C.was;was D has been;has been为什么答案是选A?为什么不选B?去解析
Ever since Bob______a little child ,he _____afraid of dark.
A.was;has been B.has been.was C.was;was D has been;has been
为什么答案是选A?
为什么不选B?
去解析

Ever since Bob______a little child ,he _____afraid of dark.A.was;has been B.has been.was C.was;was D has been;has been为什么答案是选A?为什么不选B?去解析
ever since 后的句子要用一般过去时,这个词常与现在完成时连用,所以正确的是A

A. was, has been
that's just how i say it
has been = 一直就

since 后面要接的时代比he _____afraid of dark这句的时态要早。
一般情况下,在现在完成时中,since后面要接一个过去的时代,或者时间状语