英语时态精讲之一般现在时

1、含有be动词的句子

He is a teacher.

The g足毂忍珩irl is very beautiful.

Tim and Jack are students.

★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 students?

★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 students.

★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 no

2、不含有be动词的句子,即含有一般动词的句子。

(1)第三人称单数及单数名词

He likes books.

She likes him.

The dog likes bones.

★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doesn't, 动词变为原型,原句中的动词不再有第三人称变化。

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 doesn'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。

(2)其他人称及复数名词

I want to have a bath.

We have some meat.

The students 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 students 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.