高中英语 Unit 2《What is happiness to you-Grammar》学案 译林版选修6

Unit 2《What is happiness to you》GrammarI.Explanation过去时态有：一般过去时，过去进行时以及过去完成时态等。一般过去时的基本用法：一般过去时态表示过去某个时间发生的动作或存在的状态，也可以表示常常或反复发生的动作。同时，它常和表示过去的时间状语如 ago, last year, in the past, just now 等时间状语连用。例如：Tangshan Great Earthquake broke out 30 years ago and thousands of people were killed.When we lived there, we went to see him very often.过去进行时态的基本用法：过去进行时态是以过去时间为基点的，即过去某个时刻或时段正在进行的动作。例如：——What were you doing when Tony phoned you?——I had just finished my work and ________________ a shower.A. had taken B. took C. have taken D. was taking答案是 D。从上句 were you doing 可以得出答案。过去完成时态的基本用法：过去完成时态以过去时间为基点，站在过去看过去，即过去的过去。例如：The train had left before he reached the station.将来时态有：一般将来时，将来进行时和过去将来时态等。一般将来时态除了用 will(shall)+do 表示一种“纯粹”的将来之外，还有下面一些形式：（1）be going to do---- 表示即将发生的事，或打算、计划、决定要做的事，或可能要发生的事。He is going to spend his winter holidays in Harbin this year.(2) 现在进行时态表示按计划或安排即将要进行的动作，不过只局限于表示位置移动的非延续性动词，如 come, go, start, arrive, leave, return 等。例如：Ladies and gentlemen, please fasten your seat belts. The plane is taking off.(3) 一般现在时表示按照计划或时刻表要发生的动作，在表示条件/时间等状语从句中代替一般将来时态。The train leaves at 6: 30.I will give you a call if I come here tomorrow.(4) be + to do---- 表示安排好并即将要发生的事。例如：Premier Wen is to speak on TV at seven tonight.将来进行时态的基本用法：将来进行时态是以现在时间为基点，即现在看来，将来某个时刻或时段正在进行的动作。过去将来时态的基本用法：过去将来时态是以过去时间为基点，站在过去看将来。例如：He told me that the ...