过去式疑问句怎么用?why did you focused on her?

过去式疑问句怎么用?why did you focused on her?

题目
过去式疑问句怎么用?why did you focused on her?
why did you focus on her?
why did you focused on her?
这两个哪个是对的 是不是所有过去式后就不能再过去式了 就像 i was going to the bathroom.
而不能 i was went to bathroom.
答案
why did you focus on her?这句focus为及物动词 用的是主动形式 疑问时要加助动词 如果是过去式 助动词用did 一般时用dowhy are you focused on her?这句是 be focused on 此处的 focused可理解为被动也可理解为形容...
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