三年级英语语法大全

语法专项整理一名词

1、名词的种类：

专有名词 China, Beijing, Amy, January, Monday,

普通名词 可数名词 单数 a book, a pencil, an apple, an umbrella,

复数 books, pencils, apples, umbrellas,

不可数名词 milk, water, juice, tea, rice,

2、专有名词：专有名词是指某个人、某些地方、某样物品专有的名称;Children’s Day

专有名词第一个字母要大写,前面不加a, an, the

3、单数名词：

1一般名词,在前面加a：a book, a computer,

2元音字母开头的名词,在前面加an： an egg, an orange元音字母是：a, e, i, o, u

少数例外: an hour, a university 以元音发音为准

4、复数名词：

规则：

情况 规则 例词

一般情况 加s cats, apples

o, s, x, ch, sh结尾 加es potatoes, buses, classes, boxes, watches

辅音字母加y结尾 去y加ies butterfly--butterflies

元音字母加y结尾 加s days, keys, boys

f, fe结尾 变成ves leaf--leaves, knife--knives

不规则：

情况 例词

改变元音 foot--feet, tooth--teeth, goose--geese, man--men, woman--women,

词尾发生变化 child—children, mouse-- mice

单复数同形 sheep--sheep, deer--deer, fish--fish, people--people

5、不可数名词：在不可数名词前只能加some一些, much许多

1液体：water, milk, coke, coffee, juice, tea 2气体：air, vapour

3不能“个别的”存在：hair, rice, beef, meat, pork, mutton

语法专项整理二代词

1、人称代词

人 称 单 数 复 数

主 格 宾 格 主 格 宾 格

第一人称 I me we us

第二人称 you you you you

第三人称 he him

they them she her

it it

2、物主代词

人 称 单 数 复 数

形容词性 名词性 形容词性 名词性

第一人称 my mine our ours

第二人称 your yours your yours

第三人称 his his

their theirs her hers

its its

3、指示代词：this, that, these, those

如：This is my doll. That is Mary’s.

Look at the those sheep. They are eating grass.

语法专项整理三数词

1、基数词：表示数目的多少

one one hundred

two twenty one thousand

three thirteen thirty 三位数要在百位和十位之间加and

如：one hundred and sixteen 116

one hundred and twenty-one 121 four fourteen forty

five fifteen fifty

six sixteen sixty severn seventeen seventy

eight eighteen eighty

nine nineteen ninety

ten 加teen 加ty

两位数非整十中间加连字符“-”

如：fifty-one 51 eleven

twelve

2、序数词：表示顺序

第一至第十 第十一至第十九 第二十及以上

first eleventh

second twelfth twentieth

third thirteenth thirtieth

fourth fourteenth fortieth

fifth fifteenth fiftieth

sixth sixteenth sixtieth

seventh seventeenth seventieth

eighth eighteenth eightieth

ninth nineteenth ninetieth

tenth 除第1、2、3, 直接加th ty结尾,变y为ie,再加th

语法专项整理五介词

1、介词的分类

词类 例词

时间介词 at 7:00, in the morning, on Monday, before lunch, after dinner,

方位介词 on the desk, in the park, at home, under the tree, behind the door, over the bed, in front

of the house, near the lake, next to the cinema,

动向介词 go to school, jump into the water, climb up the tree, ski down the mountain, run out of the

door

方式介词 by bike, on foot, play with my friend

2、at, on, in在表示时间时的区别： 1at用于具体的时刻：at 10:05, at noon, at night,

2on用于具体的一天常与星期、节日、具体的某一天连用,也表示某天上午、下午或晚上：

on Monday, on New Year’s Day, on June 1st, on my birthday, on Friday morning, on the

weekend,

3in用于某一段时间常与上午、下午、晚上连用,常与月份、季节、年份连用：

in the morning, in the afternoon, in the evening, in March, in spring, in 2007,

语法专项整理六There be 结构

1、

概念：There be结构又叫存在句,表示某地存在某物;

2、 There be 结构的肯定句

（1） There is + 可数名词单数 + 地点：There is a book on the desk.

（2） There is + 不可数名词 + 地点：There is some water in the glass

（3） There are + 可数名词复数 + 地点：There are some flowers in the garden.

就近原则：若句子中有几个并列的主语,be动词的形式和最近的一个主语保持一致

There is a book and 2 pencils in the bag.

There are many flowers and a tree in the garden.

3、 There be 结构的疑问句把be动词提到句子前面,若句子中有some,要变为any

Is there a book on the desk Is there any water in the glass

Are there any flowers in the garden

语法专项整理七现在进行时

1、概念：表示说话时正在进行的动作;提示词：Now, look, listen

2、构成：be动词 + 现在分词： be动词后面的动词要加ing,变成动名词;

形式 例句

第一人称单数 + am + 现在分词 I am reading a book.

第三人称单数+ is + 现在分词 He is doing homework. She is flying a kite.

第二人称单数/各人称复数+ are + 现在分词 We are cooking dinner. They are cleaning the room.

3、现在分词

规则 例词

一般情况,加ing Walk-walking, do-doing e结尾,去e加ing dance-dancing, make-making, write-writing, have-having,

汉堡单词,双写加ing run-running, swim-swimming hopping sitting

语法专项整理八一般现在时

1、概念：表示现在存在着的状况,也可理解为习惯性的动作,不断重复发生的事;

提示词：always, often, usually, sometimes, never, every morning, every… ~

2、构成：

分类 形式 例句

Be动词的一般现在时 第一人称单数 + am I am a student.

第三人称单数 + is He is a boy. She is pretty

第二人称单数/各人称复数 + are We are good friends.

其他动词的一般现在时 第三人称单数 + 动词单三形式 She works in the hospital. He lives in the city.

其他人称 + 动词原形 They work in the farm. We live in the village.

3、动词单三形式：

规则 例词

一般动词,加s work—works, make—makes

o,ch,sh,s,x结尾加es watch--watches, wash--washes, go--goes, do--does

辅音字母加y,去y加ies fly—flies, cry--cries,

元音字母加y,直接加s buy--buys, play—plays, stay--stays,

不规则形式 have--has are,am—is

语法专项整理九一般将来时

1、概念：表示将来要做的事,要发生的动作;

提示词：tomorrow, tonight, this afternoon, this evening, this weekend, next weekend, next

Monday,

2、构成：

1be动词 + going to + 动词原形：

I am going to watch TV after dinner.

He is going to buy a book this afternoon.

They are going to go swimming next Sunday.

情态动词can