主系表

主语+be+表语

肯定句:He is in the car.
否定句:He is not in the car.
一般疑问句:Is he in the car? Yes,he is. No,he isn’t.

谁在车里？
特殊疑问句——提问主语:Who is in the car?

疑问词+is,am,are+主语？

他在哪儿？
特殊疑问句——提问非主语:Where is he?

缩写

I am -> I’m
He is -> He’s
It is -> It’s
They are -> They’re
I am not -> I’m not
is not -> isn’t
are not -> aren’t

主谓（宾）

主语+非be+(宾语)+状语

非三单+动原+

否定句：非三单+do not+动原+
一般疑问句:Do+非三单+动原+
特殊疑问句——提问主语：语序不变
特殊疑问句——提问非主语：特助主谓，特殊疑问词+主动词do+非三单+动原+

三单+动s+

否定句:三单+does not+动原+
一般疑问句:Does+三单+动原+
特殊疑问句——提问主语：语序不变
特殊疑问句——提问非主语：特助主谓，特殊疑问词+主动词does+三单+动原+

三单

人称代词：第三人称 -> he、she、it
指示代词：this、this book、that、that dog
名词:单数，不可数名词

非三单

人称代词:I you we they
指示代词:these、those
名词:复数

肯定句:They learn English every day.

他们每天不学英语。
否定句:They don’t learn English every day.

他们每天学英语吗？
一般疑问句:Do they learn English every day?

谁每天学英语？
特殊疑问句——提问主语:Who learn English every day?

他们每天学什么？
特殊疑问句——提问非主语:What do they learn every day?

There be 结构

(There + is/are)(存在) + 名词 + (地点)

There 不是主语，只是占主语位置。所以is/are由后面名词决定。
表达存在，而have表示拥有，例如：我有三辆车 I have three cars.

就近原则

There is a cat and two dogs under the tree.
There are two dogs and a cat under the tree.

肯定句:There are many students in the classroom
否定句:There are not many students in the classroom(some 在否定句中变成 any)
一般疑问句:Are there many students in the classroom?

教室里有多少同学？
特殊疑问句:How many students are there in the classroom?
How much + 不可数名词+is there + 地点
How many + 可数名词 + are there + 地点

中译英(主谓-时态-语态)

找主谓——定结构

主谓（宾）
主系表
there be

中-中’-英——定语序

方式、地点、时间
从小到大
句首状语

每天6点他在家写作业吗？
Dose he do his homework at home at six every day ?