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标题: 新概念语法解析之一般现在时 [打印本页]

作者: saya 时间: 2012-9-26 14:58
标题: 新概念语法解析之一般现在时
1. 一般现在时

　　表示一般性，经常性的动作或一般性事实。

　　1 含有be动词的句子

　　He is a teacher.

　　The girl 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 not.

　　★不含有be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 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。
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.

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