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改否定句英语怎么改
一般来说,把英语句子改为否定句,只要加上否定词not就可以了。
英语否定句是表示否定的句子,必须有否定词。有了否定词才算否定句。英语否定句是中国人学习英语的一个重点,也是一个难点。唯有突破这类难点,才能使我们的英语学习有质的飞跃。
1、句中有be动词(am/is/are/was/were)的,在be动词后加not。
如:I can swim.——I can't swim.
He is a math teacher. → He is not a math teacher.
2、句中有情态动词的(can/should/must/would),在情态动词后面加not;
如:There will be a new building next year. → There will not be a new building next year. (will not可以缩写为won't)
3、句中没有be动词和情态动词的,在动词前加don't或doesn't
① 句中动词为原形的,加don't .如: I like apples. I don't like apples.
②句中动词为三单式的,加doesn't,并将三单式的动词还原成原形。
如:He likes apples. He doesn't like apples.
4、肯定句中的some在否定句中应改为any
如:There are some students in the classroom. There are not any students in the classroom.