1、小学英语四年级专项练习（句型转换） 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 so
2、ngs. ( 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 )
3、any books on the desk. 练习1.I’mintheTVroom. 2.Ilikedolls.3.He’scold.4.John is walking in the park. 5.Tom and Marry are friends. 6.I’m a student. 7.She will go to Beijing tomorrow, 8. We get there by bike. 9.He likes apples. 10.There are some flowers in the picture.
4、11.I often play football with my friend. 12. We are from China. 13.Sitdown.二、肯定句改一般疑问句的方法——三步法 1、 把be动词放在句首，剩下的照抄，（some 改成any，my改成your等）句点改成问号。 例如： They are in the park. Are they in the park?52、 把can，等放到句首，剩下的照抄，（some 改成any，my改成your等）句点改成问号。 例如：He can play the
5、guitar. Can he play the guitar? 2、 上述都没有的，在句首请助动词Do/Does帮忙，剩下的照抄，（some 改成any，my改成your等）句点改成问号。 例如： I like the ducks. He likes the dogs. Do you like the ducks? Does he like the dogs?练习1.Thisismyfan.2.Ilikethiscat.3.Icanseeaboy.4.She’sanicegirl.5.They’re
6、hisshoes.6.We need some masks. 7.I am listening to music. 8.Mike is a student. 9.Sarah can clean the classroom. 10.They are in the zoo. 11.There are some flowers in the vase.12.This is my sister. 13.We are sweeping the floor. 14.They like
7、 making the puppet. 15.Su Hai and Su Yang live in a new house. 16.I put a book on my head. 17.They sing “In the classroom”together. 18.We play basketball on Sundays. 19.Tom likes listening to music 三、肯定句改特殊疑问句的方法——四步法 1、在一般疑问句的基础上，句首添加一个疑问词即可，可根据划线部分确定是什么疑问词。
