When当什么的时候,并不表示过去式.当孩子们年轻的时候,是过去式,所以应该用Began,已经过去的事情.
Have begun是现在完成式,已经过去的式,但是对现在还有影响的情况下才用现在完成式.
when the children are still very young,parents ___telling them .
when the children are still very young,parents ___telling them .
为什么不用began而是have begun 不是when表示的是一般过去时吗
为什么不用began而是have begun 不是when表示的是一般过去时吗
英语人气：790 ℃时间：2019-11-18 05:27:54
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