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中考英語復(fù)習(xí)資料:肯定句變否定句的基本方法
1. be動(dòng)詞的否定式
be 動(dòng)詞根據(jù)不同的人稱和時(shí)態(tài)有不同的形式,在一般現(xiàn)在時(shí)中是am , is , are可用作聯(lián)系動(dòng)詞,構(gòu)成否定式時(shí),一律在其后面加否定詞not.
He is reading. --- He is not reading. They are from China. --- They are not from China.
2. 情態(tài)動(dòng)詞的否定式
情態(tài)動(dòng)詞的否定式是在其后面直接加not. 如:
I can swim. --- I can’t swim. He can dance. --- He can’t dance. You should go to school at seven. --- You shouldn’t go to school at seven.
3. 實(shí)義動(dòng)詞的否定句
實(shí)義動(dòng)詞變否定句時(shí),要借助助動(dòng)詞do , does,在一般現(xiàn)在時(shí)中用do或者does其句子結(jié)構(gòu)為:主語+ don’t / doesn’t + 動(dòng)詞原形+其它 例如:
I like pop music. --- I don’t like pop music. He likes running. --- He doesn’t like running.
She does her homework at home. --- She doesn’t do her homework at home
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