新概念英语第一册语总结(上)[八种时态].docxVIP

新概念英语第一册语法总结（上）[八种时态]一．时态：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1.一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 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 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.不含有系动词的句子，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’tYes, 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’tYes, they do. No, they don’t.2.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 notWe 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3.一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，将动词变为过去式，a