三年级英语法点
一、划线提问：
1. what
a. 询问职业
b. 询问事物
c. 用name询问名字。
e.g. (1) He is a doctor.
What is he?
(2) That is a hen.
What is that?
(3) They are chicks.
What are they?
(4) His name is Peter.
What is his name?
2. who 询问人
e.g. (1) I am Miss Fang.
Who are you?
(2) That is my father.
Who is that?
(3) He is Kitty’s teacher.
Who is he?
3. what colour 询问颜色
(1) This bag is blue.
What colour is this bag?
(2) They are yellow.
What colour are they?
4. how
a. 询问身体状况
b. 形容词
(1) I’m fine. How are you?
(2) He’s sad. How is he?
5. how old 询问年龄
(1) I’m nine.
How old are you?
(2) My sister is ten.
How old is your sister?
6. how many 问多少东西
(1) Ten apples.
How many apples?
(2) One banana.
How many bananas?
7. how much 问多少钱
(1) The apples are ten yuan.
How much are the apples?
(2) The pencil is one yuan.
How much is the pencil?
8. where 问地点
The girls are in the park.
Where are the girls?
二、to be句型
（一）．否定句。
1. 先找am, is , are
2. 后加not is not= isn’t
are not = aren’t
a. I am a boy.
I am not a boy.
( I’m not a boy. )
b. You are tall.
You aren’t tall.
c. Mr Li is happy.
Mr Li isn’t happy.
（二）、 一般疑问句。
1. 找到 I am ，改为Are you。
Eg. I am a boy. ----- Are you a boy?
2. 找到 is /are ,移到句首。
Eg. She is Miss Fang.
Is she Miss Fang?
They are hungry.
Are they hungry?
3. my ,your 根据情况，互为对调。
三. can 句型的肯定句、否定句、一般疑问句
1. I can see a lime.
否定句 I can not see a lime.
I can’t see a lime.
一般疑问句 Can you see a lime ?
肯定回答 Yes, I can.
否定回答 No, I can’t.
2. Ming can hear a drill.
否定句 Ming can not hear a drill. / Ming can’t hear a drill.
一般疑问句 Can Ming hear a drill ?
肯定回答 Yes, he can.
否定回答 No, he can’t.
四、To have 句型:
1.Have动词包括have，has, 中文意思都是“有”， I，you 和复数人称用have，第三人称单数用has。
例如：I have some bread.
You have two books.
My friends have some hamburgers.
He has a nice balloon.
Mary has a pink dress.
2. 句式转换：
肯定句：I have some books.
否定句：I haven’t any books. 或 I don’t have any books.
一般疑问句：
Have you any books?
或 Do you have any books?
肯定回答： Yes, I have. Yes, I do.
否定回答： No, I haven’t.
No, I don’t.
划线提问：How many books have you?
或 How many books do you have?
3. 注意：have= have got
has= has got 句子带有got，不能用助动词do。
五.祈使句：表示请求或命令语气。句子中动词用原形。
句子中有please、let 或没有主语的往往是祈使句。
如: 肯定句 Let’s go to the cinema.
Please open your books.
Go there. Betty, clap your hands now.
否定句 Please don’t write a letter.
Don’t put on your coats.
Kitty, don’t play with matches.
六、there be 句型:
1.there be动词包括there is, there are; 中文意思都是“有， 用于某地方存在有”。There is 后面跟单数名词和不可数名词。There are 后面跟复数名词。
例如： There is a peach on the plate.
There is some milk in the box.
There are three pencils on the desk.
2.当并列几个名词时，依据“就近原则”：
例如：There is a pen, some paper and five books on the desk.
There are four chairs, a sofa and a table in my living room.
3.问在什么地方有多少人或物：
(1) How many 复数名词 are there 地点？
如： How many crayons are there in the box?
回答：There’s one. 或 There are twelve crayons.
七、 句式转换：
1) 主语是I，you，复数人称的助动词用do：
肯定句：Her parents like reading books .
否定句：Her parents don’t like reading books .
一般疑问句：Do her parents like reading books ?
肯定回答：Yes, they do.
否定回答：No, they don’t.
划线提问：What do her parents like doing ?
2) 主语是第三数人称单数的助动词用does：
肯定句：Sally likes to plant a tree .
否定句：Sally doesn’t like to plant a tree .
一般疑问句：Does Sally like to plant a tree ?
肯定回答：Yes, she does.
否定回答：No, she doesn’t.
划线提问：What does Sally like to do ?
