英语语法问题:haven't ,wasn't ,didn't等这些过去时、完成时的否定后加动词什么时态?是都用原型吗?过去进行时中wasn't后动词要ing吧?具体说明一下,
英语语法问题:haven't ,wasn't ,didn't等这些过去时、完成时的否定后加动词什么时态?是都用原型吗?过去进行时中wasn't后动词要ing吧?具体说明一下,
英语人气：947 ℃时间：2020-01-28 08:04:32
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一般过去式的be动词和助动词do/does的过去式为was/were 和didbe动词后接名词或形容词,因此在过去时只需将be动词改成was/were即可,没有后面在接动词原形一说.在被动语态的情况下：be+动词过去分词,改为过去式就是was/...
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