小学英语语法--动词的第三人称单数形式

动词的第三人称单数形式

关键词：

①是针对动词作改变 

②主语是第三人称 除you I 复数之外的，单个人名，单个物品，单个植物，单个动物等

③主语是单数1个

例如He she it 单个的人名Mike LucyMy father  this dog      

一do does的用法

do some chores  does some chores 

I/You/We/They/复数 ＋do some chores

He/she/It/单个人名，物体，+does some chores

二,否定形式（含有not no的句子）+缩写形式

is ---- is not=isn’t        are---are not=aren’t

can---can not=can’t

do---do not=don’t       does---does not=doesn’t   

三,动词的三单形式 变否定

likes---don’t/doesn’t like     has---don’t/doesn’t have

reads---don’t/doesn’t read   helps---don’t/doesn’t help

wants---don’t/doesn’t want   

sweep--don’t/doesn’t sweep

三下课文中含有三单形式的句子

①Your dogis(be动词）cute.Ithasa long body and short legs.（名词复数）

②One cute cat usestwo old balls.（名词复数）

③A clock hastwelve numbers.

四下课文中含有三单形式的句子

①My grandpa teachesChinese.

②He makes great chairs.

③My grandma makes good lunches.

④She makes amazing peach buns.

⑤My mum has magic hands.

⑥The dishhassome apples,oranges,tomatoes and broccoli.

⑦He oftenhelpsme with English.

动词三单形式的构成规则

①在动词后直接加s 如use-uses make-makes  read-reads

②不规则 如have-has

③以sh ch x ，o结尾的动词，三单加es teach-teaches教

Wash-washes洗watch-watches看   go-goes   do-does

④以元音字母+y play-plays

以辅音字母+y   fly-flies   study-studies

动词三单形式的练习

一，用do does的适当形式填空

1.-you like dogs and cats?   ---Yes,I

2.- she play basketball?   ---No,she

3.Mike and Tom play football after school?--No,they

4 they eat apples every day?--Yes,they.

二用所给单词的适当形式填空

1She often(sweep)the floor at home.

2He often(fly)a kite after school.

3We(clean)the room together.

4I often(cook) with my father.

5Longlong (read)books with his cousin.

三写出下列动词的第三人称单数形式

1.read---         like---        want---

2.watch--        go--          do--

3.play--         study--        fly--

4.sweep--       clean--        make--

四写出下列单词的缩写形式

do not= does not=        can not=

is not= are not=         will not=

五将下列句子变成否定句

1 I am a student.

2She is 10.

3We are friends.

4They can sweep the floor.

5It has a long body.

6The cat likes to eat fish.

7Lucy sweeps the floor.

8Mr Li stays at home.

9We want some milk.

10Apples are good .