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1、新概念英语第一册语法总结：一般现在时英语中的时态一共有八种，它们是：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。今天我们所要讲的就是第一种： 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notHe
2、 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.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
3、books?Does she like him?Does the dog like bones?变否定句在主语及动词之间加doesnt, 动词变为原型，原句中的动词不再有第三人称变化。He doesnt like books.She doesnt like him.The dog doesnt like bones.肯定回答及否定回答：Yes, he does. / No, he doesnt.Yes, she does. / No, she doesntYes, it does. / No, it doesnt.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
4、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doDo 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dont.You dont want to have a bath.We dont have any meat.The students dont like smart teachers.肯定回答及否定回答Yes, I do. / No, I dont.Yes, we do. / No, we dontYes, they do. / No, they dont.
