句型转换精讲

专题一句型转换

内容：

陈述句：肯定句否定句

疑问句：一般疑问句特殊疑问句

一.肯定句变否定句

1.句子中有be，在be后加not。（be动词有am ,is ,are,was,were)

1)I am a student. I am not a student.

2)They are blue . They aren’t blue.

3) He is Kangkang. He isn’t Kangkan g .

4) I was ten last year. I wasn't ten yesterday.

5) He was good at English. He wasn't good at English.

6)They were at home last Sunday. They weren't at home last Sunday.

练习：把下列句子变为否定句

1.His father is an English teacher._____________________________

2.He is crying under the tree _____________________________

3.He was thirteen years old two years ago._______________________

4.They are very lucky.______________________________________

5.t the family was poor

6.My voice was too weak

2.谓语是动词原形，在动词前加don’t。

7.I have a book . I don’t have a book.

8.They like Chinese . They don’t like Chinese.

9.3) We come from China. We don’t come from China.

3.谓语动词是第三人称单数，在动词前加doesn’t，动词用原形。

1)She has a small mouth.

She doesn’t have a small mouth.

2)Maria likes China.

Maria doesn’t like China.

3)Jane comes from the U.S.A.

Jane doesn’t come from the U.S.A.

4.谓语动词是一般过去式，在动词前面加didn't,同时动词还原为原型。不分人称和单复数。

1) I watched TV last night.

I didn't watch TV last night.

2) They went to the Great Wall the day before yesterday.

They didn't go to the Great Wall the day before yesterday.

3)He bought a new T-shirt .

He didn't buy a new T-shirt.

5.句子中有情态动词can和could的，直接在情态动词后面加not

He can swim. He can't swim.

They could win the game. They could not win the game.

练习：把下列句子变为否定句

1.He looked thin and very serious. _________________________

2.He lives in Beijing._____________________________

3.I can speak English.____________________________________

4.In the afternoon, I have art at half past one._______________________

5.I visit my website at the weekend.___________________________

6.We had an interesting holiday in Greece._________________________

7.He decided to be an actor when he finished school at the age of fourteen._________________________________________________

8.I often walked by the riverside._____________________________

9.When he was young, he could go skating every winter.

___________________________________________________

二、变一般疑问句

1.句子中有be的，直接把be动词提至主语前。如主语为第一人称，应将其改为第二人称。如：

1）I'm in Class 2Grade 1．→Are you in Class 2Grade 1？

2）We were watching TV．→Were you watching TV？

2.陈述句中有情态动词（can could …）时，也可直接将它们提至主语前，即可成为一般疑问句。如：

1)He can swim now．→Can he swim now？

2)The children could come with us．→ Could the children come with us？

3.句子中谓语为实意动词时，若是一般现在时，第一人称、第二人称和复数，用助动词do,第三人称借does;若是过去式，则借用did

1) I get up early. Do you get up early?

2) They take a walk after supper every night.

Do they take a walk after supper every night?

3) He likes English songs. Does he like English songs.

4) They planted three trees yesterday.

Did they planted three trees yesterday?

练习：把下列句子变为一般疑问句

1.Sandy has long hair in a ponytail.

2.Amy likes playing computer games.

3. She likes milk.

4.I want to buy a big green bag

5.Lucy did her homework at home.

三、特殊疑问句型

以疑问词开头，对句中某一成分提问的句子叫特殊疑问句。考试中经常出现为对画线部分提问。

常用的疑问词有：

when 什么时间（问时间）what date 什么日期问具体日期who 谁（问人）what place什么地点问具体地址whose 谁的问主人how …怎么样问情况

where 在哪里问地点how old 多大问年龄

which 哪一个问选择how many 多少问数量

why 为什么问原因how much 多少问价钱

what 什么问东西how about …怎么样问意见

what time 什么时间问时间how far 多远问路程

what colour 什么颜色问颜色how long 多长问时间

what about…怎么样问意见How soon 多快，多久问时间what day 星期几问星期How often多久问频率