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,
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 20:27:37
![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,](/uploads/image/z/7299137-65-7.jpg?t=%E8%8B%B1%E8%AF%AD%E8%AF%AD%E6%B3%95%E9%97%AE%E9%A2%98%3Ahaven%27t+%2Cwasn%27t+%2Cdidn%27t%E7%AD%89%E8%BF%99%E4%BA%9B%E8%BF%87%E5%8E%BB%E6%97%B6%E3%80%81%E5%AE%8C%E6%88%90%E6%97%B6%E7%9A%84%E5%90%A6%E5%AE%9A%E5%90%8E%E5%8A%A0%E5%8A%A8%E8%AF%8D%E4%BB%80%E4%B9%88%E6%97%B6%E6%80%81%3F%E6%98%AF%E9%83%BD%E7%94%A8%E5%8E%9F%E5%9E%8B%E5%90%97%3F%E8%BF%87%E5%8E%BB%E8%BF%9B%E8%A1%8C%E6%97%B6%E4%B8%ADwasn%27t%E5%90%8E%E5%8A%A8%E8%AF%8D%E8%A6%81ing%E5%90%A7%3F%E5%85%B7%E4%BD%93%E8%AF%B4%E6%98%8E%E4%B8%80%E4%B8%8B%2C)
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,
一般过去式的be动词和助动词do/does的过去式为was/were 和did
be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/were+动词过去分词
助动词do/does,过去式为did,其后才接动词原形
完成时态结构为:have/has+动词过去分词,否定式为haven't/hasn't+动词过去分词
过去进行时:was/were+动词ing,否定式为wasn't/weren't+动词
didn't后加动词原形,wasn't后加动词ing,haven't后加动词的过去分词形式