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IT职业英语 高巍巍 YF-Grammar 语法 unit1 Tenses时态新.ppt

发布:2015-12-12约2.94千字共18页下载文档
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Grammar 语法 Unit 1 Tenses时态 一、英语16种时态的动词形式 二、英语时态的用法 英语时态表达两层含义:时间和内容。 三、列举七种时态和四种将来式的主要用法 1. 一般现在时: 一般现在时用来表达: (1) 一个习惯(经常发生的动作);I go to work on foot. (2) (时间表或日历中的)将来事件:The boss interviews all candidates this Friday morning. 三、列举七种时态和四种将来式的主要用法 2. 现在进行时: 现在进行时用来表达: (1) 说话时正在发生的动作:They are installing the latest-version operating system. (2) 进行中的动作:He is learning Visual C++. NET these days. (3) 计划好的日程安排:Leaders are checking our safety work tomorrow. 三、列举七种时态和四种将来式的主要用法 3. 现在完成时: 现在完成时用来表达: (1) 现在已经完成的动作:We have trained our staff to use the English-version operating system. (2) 过去的动作,持续到现在或将来:Larry has worked for IBM since he was 27 years old. 三、列举七种时态和四种将来式的主要用法 4. 现在完成进行时: 现在完成进行时用来表达: (1) 过去发生且持续到现在的动作:Larry has been working for IBM since he was 27 years old. (2) 过去动作造成目前的结果:Sandy is disappointed because she has been checking the new software and found a lot of problems with it. 三、列举七种时态和四种将来式的主要用法 5. 一般过去时: 一般过去时用来表达: 过去发生而且已经完成的动作:The man was a technical support representative. 三、列举七种时态和四种将来式的主要用法 6. 过去进行时: 过去进行时用来表达: 过去某时正在进行的动作:The salesman was writing letters this time yesterday. 三、列举七种时态和四种将来式的主要用法 7. 过去完成时: 过去完成时用来表达: 过去一个动作之前已经完成的动作:The general manager had finished his presentation before 2:00 pm yesterday. 将来形式: 1.‘will/shall’ 将来:一般将来或预测的将来 一般将来或预测的将来用来表达: (1) 将来的事实或根据个人观点推测的可能发生的事情:He will come for lunch. (2) 说话时立即做出的决定、打算或提议:I will study hard. We will employ two network team leaders. They will do that for us. 将来形式: 2. ‘going to’ future计划的将来 计划的将来用来表达: (1) 根据现实情况对将来进行得推测某事必然发生: It is going to break down without careful attention. (2) 说话前就已经做好了的计划、决定或打算: The college is going to send teacher abroad to study computer science. 将来形式: 3. future continuous将来进行式 将来进行式用来表达:将来某一时刻正在发生的动作: The meeting will be taking place at 10 am tomorrow. 将来形式: 4. future perfect将来完成式 将来完成式用来表达:将来某一时间之前已经完成的动作: You will have finished your studies for the undergraduate course by May next year. 注意:其他时态的用法参考所有现在各种时态的用法 Exercise Fill in the gaps with the proper tense form of the
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