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　　中考网整理了关于2020年中考英语知识点之过去进行时句型转换，希望对同学们有所帮助，仅供参考。

　　句型转换

　　因为“was/were doing”中的was/were是助动词，所以在进行句型转换中要注意不需要再另外借助助动词do/did/does，而是直接借用was/were。如：

　　肯定句：I was trying to work out a solution to the problem at this time yesterday.

　　否定句：I wasn't trying to work out a solution to the problem at this time yesterday.

　　一般疑问句：Were you trying to work out a solution to the problem at this time yesterday?

　　特殊疑问句：What were you trying to work out at this time yesterday. （划线部分为a solution to the problem）

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