小学英语肯定句变否定句方法及练习.doc

句型转换的方法（一）
一、 肯定句改否定句的方法——一步法
1、 在be动词后加not。如：is not ， are not ， am not， was not， were not；
例如：He is in the classroom. (改为否定句）
He is not ( isn’t ) in the classroom.
2、 在can，should， will等后加not。如：can not， should not， will not；
例如： Mike can sing English songs. ( 改为否定句）
Mike can not ( can’t ) sing English songs.
3、 上述都没有的，在动词前加助动词否定形式don’t/doesn’t/didn’t。
例如： I like pizza. ( 改为否定句）
I don’t like pizza.
4、 句中有some 的要改成any。
例如 ： There are some books on the desk. ( 改为否定句）
There are not ( aren’t ) any books on the desk.
二． 实战演习: 把下列各句改为否定句
1. John is walking in the park.
__________________________________
2. Tom and Marry are friends.
___________________________________
3. I’m a student.
___________________________________
4. She will go to Beijing tomorrow,
___________________________________
5. We get there by bike.
___________________________________
6. He likes apples.
___________________________________
7. There are some flowers in the picture.
__________________________________
8. I often play football with my friend.
__________________________________
9. We are from China.
__________________________________
10. They can go to school by ferry.
_________________________________