发布时间 : 星期五 文章英语中的时态一共有八种更新完毕开始阅读
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.
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.
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 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?
没有进行时的动词(必背)
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: 1. 表示感觉,感官的词
see, hear, like, love, want 2. have, has当“拥有”讲时没有进行时
一般过去时
表示过去发生的动作或事件,常和表示过去的时间状语连用,如yesterday, last night, the day before yesterday, 3 days ago...
含有be动词的句子,将be动词变为过去式。am, is的过去式为was, are的过去式为were:
I was at the butcher's.
You were a student a year ago.
The teacher was very beautiful ten years ago. ★变疑问句将be动词移动到句首 Were you at the butcher's? Were you a student a year ago?
Was the teacher very beautiful ten years ago? ★变否定句在be动词后面加not I was not at the butcher's.
You were not a student a year ago.
The teacher was not very beautiful ten years ago. ★肯定回答否定回答
Yes, I was. / No, I was not.