English-时态(MFG-Training-038-000).ppt

时态 时态的概念 英语时态的16种形式 16种时态的用法 时态的概念 时态是一种语法范畴，用以表达各种时间和动作方面的动词形式。 时间有四个主要部分，即现在、过去、将来、过去将来。 动作也有四个主要部分，即一般、完成、进行、完成进行。 将这些时间与动作组合，即构成4*4＝16种时态。 英语时态的16种形式 一般时 一般现在时 一般过去时 一般将来时 过去将来一般时 一般现在时 表示经常发生的动作或经常才存在的状态。（always,often,usually,sometimes,every day,etc) 主 + do + sth 主 第一、二人称 + 动词原形(are,do,have) 第三人称+动词第三人称形式(is,does,has) 例：I am a student. I have a brother. Where do you live? They get up at 6 o’clock every day. He has a cellular. She often goes to bed much late. 由when,while,before,after,until,as soon as等引导的时间状语从句亦可用现在一般时表经常发生的动作或经常才存在的状态。 例：1) When I come across a new word I consult the English dictionary. 2) Make hay while the sun shines. 3) One is not guilty until he is proved. 4) Please call me as soon as you come back. 连词if 引导的条件从句有时亦可用现在一般时表经常发生的动作或经常才存在的状态。 例：1）If you speak slowly,I understand. If you speak quickly,I don’t understand. 2) If you don’t like it you may lump it. 一般过去时 表示过去某一时间发生的动作或 存在的状态。（ago,yesterday,last week,in those day,in 1990,etc) 主 + did + sth 例: I was a teacher 3 years ago. He did a good thing yesterday. We had a good time last Summer in Beijing. They worked too late last Sunday. 用于since从句。主句的谓语动词如用现在完成时，其后接的since引导的从句一般用过去一般时。 Eg. 1) You haven’t changed much since we last met. 2) It’s been over a year since I came back from the countryside. 一般将来时 表单纯的将来的事实。（tomorrow,next week,in a few days,etc) Eg. I will go to see the doctor tomorrow. It is going to rain tonight. I shall attend the party. 进行时 现在进行时 过去进行时 将来进行时 过去将来进行时 现在进行时 表现在（即说话人的说话时刻）正在进行的动作。（now,at present,at these moment,etc) Eg. 1)What are you doing now? ---I am doing nothing at present. 2)The telephone is ringing,would you answer it,please? 过去进行时 表过去某一时间正在进行的动作。（ago,yesterday,etc) Eg. 1) They were expe