文档介绍：：
一般现在时，现在进行时，一般过去时，现在完成时，一般将来时，过去进行时，过去完成时，过去将来时
一般现在时
表示一般性，经常性的动作或一般性事实。
含有be动词的句子
He is a teacher.
The girl is very beautiful.
Tim and Jack are stude nts.
★变疑问句将be动词移到句首
Is he a teacher
Is the girl very beautiful
Are Tim and Jack stude nts
★变否定句在be动词后面加not
He is not a teacher.
The girl is not very beautiful.
Tim and Jack are not stude nts.
★肯定回答及否定回答
Yes, he is. No, he is not.
Yes, she is. No, she is not.
Yes, they are. No, they are not.
不含有动词的句子，即含有一般动词的句子
第三人称单数及单数名词
He likes books.
She likes him.
The dog likes bon es.
★变疑问句在句首加does,动词变为原型_
Does he like books
Does she like him
Does the dog like bones
★变否定句在主语及动词之间加 does n' t动词变为原型
He doesn ' t like books.
She doesn ' t like him.
The dog doesn ' t like bones.
★肯定回答及否定回答：
Yes, he does. No, he doesn t.
Yes, she does. No, she does n 't
Yes, it does. No, it doesn ' t.
注意：第三人称单数形式一般在动词后面加 S,不要和名词复数混淆，变否定句或疑问句时名词复数没
有任何变化。
其他人称及复数名词
I want to have a bath.
We have some meat.
The stude nts like smart teachers.
★变疑问句在句首加do
Do you want to have a bath
Do we have any meat
Do the stude nts like smart teachers
★变否定句在主语和动词之间加 don' t.
You don ' t want to have a bath.
We don' t have any meat.
The students don ' t like smart teachers.
★肯定回答及否定回答
Yes, I do. No, I don ' t.
Yes, we do. No, we don 't
Yes, they do. No, they don ' t.
现在进行时
表示现在正在进行的动作。
构成：主语+ be动词+动词的现在分词+其它成分（现在分词的构成见附录）
We are having lunch.
He is reading a book.
The dog is running after a cat.
The boys are swimming across the river.
★变疑问句将 be 动词移到句首
Are we having lunch
Is he reading a book
Is the dog running after a cat
Are the boys swimming across the river
★变否定句在 be 动词后面加 not
We are not having lunch.
He is not reading a book.
The dog is not running after a cat.
The boys are swimming across the river.
★特殊疑问句： what, which, how, where, who, etc.
疑问词+动词+主语+现在分词
What are you doing
What is she doing
What is the dog doing
（必背） 没有进行时的动词
表示状态，思想，感情和感觉的动词不能表示正在进行的动作
表示感觉，感官的词
see, hear, li