
把肯定句改成否定句分以下情况:
1、句中有be动词的,在be动词后加not;
2、句中有情态动词的(can ,should,must ,would),在情态动词后面加not;
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。
③时态为过去时的,要加didn’t 而且动词过去式要改为原形,
例:I went to school yesterday 。→I didn’t go to school yesterday 。
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.
将下列各句改成否定句
1、Tom's brother is walking in the park。
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2、There are some books in the bookcase.
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3、The students of Class 5 are cleaning the classroom。
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4、 I’m a student. 5、Stop and wait at a red light.
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6、Your father can ride a bike.
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7、They can play football after school。
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8、We come from China。
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9、 Touch the door.
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将下列否定句变肯定句
1、Don’t go at a red light。 2、Don’t run on the ferry。
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3、I don’t go to school。 4、The ferry doesn’t work.
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5、Don’t turn left on the road.
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