[小学三年级数学练习题]小学三年级英语下册句型与语法归纳

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【导语】语法就是语言的规律。任何一种语言都有其内在逻辑性(logic)和规律(discipline)。学习一些基本的英语语法,对于快速掌握英语语言的规律,具有事半功倍的作用,尤其是对于一些为考试而编的语法题句的理解,很有作用。以下是整理的相关资料,希望对您有所帮助!


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一、句型复习
一般疑问句:
Is this/that/it a ...?  回答:Yes,it is.    No,it isn’t.
Is he / she...?   回答:Yes, he /she is.      No, he/she isn’t.
Are you...?      回答:Yes, I am.            No, I am not.
Are these/they ...?   回答:Yes,they are.   No,they aren’t.
Do you...?     回答:Yes, I do.        No, I don’t.
Is there...?   回答:Yes,there is.     No, there isn’t.
Are there...?  回答:Yes,there are.    No, there aren’t.
特殊疑问句:
Who’s he/she ?     回答:He’s/She’s ?
Who are they?        回答:They are...
Where is..?          回答:It’s  in/on...(介词短语)
Where are??         回答:They are in/on...(介词短语)           Where are you from?  回答:I am from... / We are from...
Where is he / she/ it from? 回答: He /She / It is from ?       Where are they from?        回答: They are from....
What’s in / on / near/ under / beside the ??  回答:There is /are ...
How many...?   回答:There is one./There are two.(2个或2个以上的数字)
What is it/this/that? (单数)        回答:  It’s a... .
What are they/these/those? (复数) 回答: They’re ...
日常用语:
Put...on/in(介词短语)...    回答: OK/All right.
Draw...    回答: OK/All right.
Thank you!  回答: You’re welcome.
Here’s ...  回答:Thank you!

二、名词单数变复数,一般都把s 加。
特殊变化有以下:
单数复数一个样, sheep--sheep fish- fish  goldfish - goldfish    Chinese-Chinese   Japanese -Japanese
2.遇到oo 变ee :  foot-feet   goose- geese   tooth - teeth
3.有些变化就是大:mouse – mice  child - children  man-men  woman-women
4 .以s, x, sh, ch 结尾 , +es   (bus-buses, box-boxes,  brush-brushes,
watch-watches)
5、以0 结尾(有生命的o)+es        (tomato-tomatoes)(番茄)       例外:kangaroo- kangaroos
6、以辅音字母+y结尾,改y为i+es  ( lady-ladies,  baby-babies  study-studies)
7.以f 或fe结尾,改f或fe为v+es       (knife- knives   shelf-shelves)

三、have与has 的区别:
have, has 都是“有”,
它们的用法有讲究, 表示“某人有某物”,have, has请记住。 he, she, it “有”用has,    I, we , they , you 都用 have。 主人单数用 has , 主人复数用 have。
have 就是能力强,疑问 ( ?)否定 (don’t / do not)都用它。

四、have ,has 与there is , there are 的区别
表示某人或某动物 有  : has / have    (I have a dog.   The dog has a short tail.) 表示某地方 有: there is / are       (There is a book in the bag. )

五、Some与any 的区别:
some用于肯定句中,any用于否定句和疑问句中。
如:I have some books.  I don’t have any books.  Do you have any books ?

六.a  与an 的区别
一般来讲,元音字母(即a, e , i, o , u )开头的单词用an
如: an apple   an ear   an American girl    an Australian stamp   an old man

七. There be 句型  (即 there is / there are )
意思: 表示某地方有某人或某物 原则:就近原则 (There be 句型中的be 动词用is 还是用are 由最靠近它的第一个名词是单数还是复数决定。)
如: There is a book and some pens on the desk.      There are some pens and a book on the desk.

八.不可数名词:
juice   chalk   tissue  (不可数名词没有复数形式)
There is some chalk.  There is some juice. There is some tissue.

九.’s所有格 :
表示:某人或某动物的
the girl’s name    那个女孩的名字  the teacher’s desk        讲台
the headmaster’s office   校长的办公室  the children’s  toys      儿孩子们的玩具
the teachers’  room    教师办公室  (当名词的复数形式是以“s”结尾时,直接加 ’)

十. be 动词 :
is  are  am ( 表示“是” )
I 用am  , you 用are , is 连着he,she ,it 。单数名词用is ,复数名词全用are 。  如: I am ….   You are… .   We are… .   They are…. .  He is…..  She is…..    It is….       The girl is ….   The boys are….    Ben is….    Janet and Ben are…

[小学三年级数学练习题]小学三年级英语下册句型与语法归纳

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