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问题: 请问过去时在什么情况下用

过去时是不是只在肯定句中用,否定,疑问中不用过去时呢?否定,疑问中的动词是不是用原形,谢谢!

解答:

过去时表示过去做的事,表现形式:将动词写成过去时态.
在疑问句和否定句中,就将助动词do变成 did,然后把过去时态的动词改成原形,就行了.例如:
They played basketball with Class Two.
Did they play basketball with Class Two?
They didn't play basketball with Class Two.