肯定句改否定句的方法
先观察句中是否有BE动词和情态动词，
1、 如果有be动词，在be动词后加not即可。如：is not ， are not ， am not， was not， were not；
2、 如果有情态动词，在can，should， will等后加not。如：cannot， should not， will not；
3、 如果上述都没有的，在动词前加助动词否定形式don’t/ doesn’t/ didn’t。
注意：肯定句改成否定句时，some 改成any。
练习
把下面的句子变成否定句。
1.She is watching TV now.
2.We go to school on Sunday.
3.His father works hard.
4.Jack's mother is a nurse.
5.The cat runs fast.
6.They like reading books.
7.My grandpa gives me a hot dog.
8.Tom often walks to school.
9.I have a doll.
10.It is eating fish.下载本文
