可数名词变复数（5条规则.ppt

可数名词变复数 （5条规则）
I --- we he/she/it --- they you ---you
is/am --- are
this---these that --- those has---have
Book---books cake---cakes friend---friends
Bus---buses box---boxes class---classes watch---watches
Baby---babies
toy---toys boy---boys
Knife---knives
指示代词（4个）
This/that-------it
These/those------they
数词（20）
One two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty
4. a/an 的区别 a book a map a desk  an eraser an orange an apple
5. Be 动词 （am/is/are)
I--- am
We/you/they/多个人，物--- are
he/she/it 单个人，物--- is
6. Have/has
I we you they 多个人、物--- have
He/she/it 单个人，物---has
7. 助动词 do
do ----does (三单）
don’t ---doesn’t (三单)
8. 句式（Be动词，情态动词）
Be动词
I am a student.
否定句：I am not a student.
一般疑问句：Are you a student?
肯定回答：yes, I am.
否定回答：no, I’m not.
I can spell it.
否定句：I can not spell it.
一般疑问句：Can you spell it ?
肯定回答：