they had rushed up and tried to do sth!

they had rushed up and tried to do sth!
they had rushed up to her while she was having a picnic with her children and tried to steal her handbag.此句中有while 前面用过去完成时后面用过去进行时,为什么要用过去完成时呢?
and 前后的两种时态怎么不一样,前者用过去完成时,后者用过去时?

小昏鸦 1年前已收到3个回答举报

该不该离婚幼苗

共回答了19个问题采纳率：78.9% 举报

首先,这句话讲的是一个过去的事情,所以都用过去时.
while后面是描述的一种持续状态,她正在用餐.众所周知,吃饭是一个持续的过程,不是一下就可以完成的动作.
但前面的rush up,它不是一个持续性动作,它是一次性动作,做完了就完了.如他打了我一下,踢了我一下,亲了我一下.这些动作都是做完了就完了,所以用过去完成时.

1年前

lwbeef 幼苗

共回答了1311个问题举报

rush up是个非持续性动词短语，是个瞬间完成的行为，故用完成时态。
to have a picnic是持续性动词短语，在一定时间段存在着的动作，故用进行时态。

1年前

夏日凌河路幼苗

共回答了284个问题举报

rush up:是瞬间行为动词.在后面时态已过去的情况下,只能用过去完成时态.

1年前

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