英语的过去式,现在进行时,改肯定句,否定句等等,都怎么改!
来源:学生作业帮 编辑:大师作文网作业帮 分类:英语作业 时间:2024/11/10 01:27:18
英语的过去式,现在进行时,改肯定句,否定句等等,都怎么改!
例:write为原形 一般现在时:He writes his paper.
肯定句:He wrote his paper.(把动词原形变为过去式即可)
He is writing his paper.[把动词原形变为be(注意人称am,is,are)+v.-ing]
改为:
否定句:He didn't write his paper.(可以理解为把过去式“转移”到助动词上变为didn't,动词则变回原形)
He isn't writing his paper.(可以理解为直接be动词后加not,即为否定形式)
一般疑问句:
Did he write his paper?(用助动词过去式did提问,放句首,其它顺序不变,但动词变为原形)
Is he writing his paper?(直接提前原肯定句be动词形式,其它顺序不变)
特殊疑问句:(提问"paper")
What did he do?(特殊疑问词+did+原句顺序)
What is he doing?(特殊疑问词+原肯定句be动词形式+原句顺序
肯定句:He wrote his paper.(把动词原形变为过去式即可)
He is writing his paper.[把动词原形变为be(注意人称am,is,are)+v.-ing]
改为:
否定句:He didn't write his paper.(可以理解为把过去式“转移”到助动词上变为didn't,动词则变回原形)
He isn't writing his paper.(可以理解为直接be动词后加not,即为否定形式)
一般疑问句:
Did he write his paper?(用助动词过去式did提问,放句首,其它顺序不变,但动词变为原形)
Is he writing his paper?(直接提前原肯定句be动词形式,其它顺序不变)
特殊疑问句:(提问"paper")
What did he do?(特殊疑问词+did+原句顺序)
What is he doing?(特殊疑问词+原肯定句be动词形式+原句顺序
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