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七年级英语上册Unit1--6句型转换专练
◆ 怎样将一个单数句子转换为复数句子 ①看主语，将句子中单数主语转变为复数。
this → these that → those I → we he/she/it → they eg: This is my sister. → These are my sisters. She is my teacher. → They are my teachers. ②看谓语，把be( am is )改成are,把has改为have，等。 eg：I am a boy. → We are boys.
She has an English book. → They have English books. ③看名词，把单数名词改成相应的复数名词，把不定冠词a/an去掉。 eg: This is my sister. → These are my sisters.
It is a watch. → They are watches./They are some watches. ④疑问词（ what who where……）,介词短语（in English……）不变。 eg: What′s this in English？→ What are these in English?
练习：（将下列单数句子改写成复数句子） 1. This is my friend.
2. That is his parent.
3. He is my son.
4. It is a watch.
◆ 陈述句转换为一般疑问句
1、把be动词放 在句首，剩下的照抄，（some 改成any，I改成you, my改成your等）句点改成问号。
2、把can，shall，will等放到句首，剩下的照抄，（some 改成any，I改成you, my改成your等）句点改成问号。
例如：陈述句: They are in the park. He can play the guitar.. 一般疑问句: Are they in the park? Can he play the guitar? 把下列句子变成一般疑问句 1. This is my sister. 2. Mike is a student.
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3. Sarah can clean the classroom. 4. They are in the zoo.
5. There are some flowers in the cup.
3、 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，I改成you, my改成your等）句点改成问号。
例如：陈述句: I like the ducks. He likes the dogs. 一般疑问句：Do you like the ducks? Does he like the dogs? 把下列句子改为一般疑问句。 1. We play basketball on Sundays. 2. They like making the puppet.
3. Su Hai and Su Yang live in a new house. 4.I put a book on my head.
5. Tom likes listening to music
◆ 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； 2、 在can，should， will等后加not。如：cannot， should not， will not；
3、 上述都没有的，在动词前加助动词否定形式don’t/doesn’t(三单用doesn’t,其余用don’t) 4、 some 改成any。 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.
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5.The cat runs fast. 6.They like reading books. 7.My grandpa gives me a hot dog. 综合练习题：
按要求改写下列句子，一空一词。 16.Is this your computer?(做否定回答） ________,_________isn't.
17.My father and mother are here.(改为同义句） _______ ___________are here. 18.That is your dictionary .(改为复数） _______ _______your ________.
19.My pencil case is on the desk.(对划线部分提问） _____ _____ _____ pencil case. 20.He has two sisters.(改为一般疑问句） ______ ______ ______two sisters?
21.My father likes to play basketball .(改为否定句） My father _____ _____to play basketball.
22.The blue sweater is twenty dollars.(对划线部分提问） ______ ______ ______the blue sweater? 23.I know his name.(改为否定句） I ____ ____ his name.
24.Does she want to watch TV?(做肯定回答） ____, ____ _____.
25.I like bananas.I like apples,too.(合并为一句话） 26..These ____(not be)my brother and sister. 27.Sally____(not do )her homework at home.
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