外研版高中英语现在完成时(术科生)-- 学案.docx
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1、Grammar - Present Perfect TenseLearning objectives:By the end of this lesson, you are expected to be able to:1. grasp the form, the meaning and the usage of Present Perfect Tense;(掌握现在完成时态的形式、意义和用法)master some key sentence patterns related to Present Perfect Tense;(掌握一些与现在完成时态相关的重要句型)use Present Per
2、fect Tense in different situations properly.(在不同的情况下正确地使用现在完成时态)Lead in:Activity 1 : Choose the right option (according to the pictures).1. I have worked at home for almost a month.2. They have been stuck at home for a long time.3. He has just finished his NAT.4. Max has not gone to bed.5. The medic
3、al workers have left home. / The medical workers have been away from home for a week.Summary - the form of present perfect tense (现在完成时的形式)主动语态: 肯定形式:S + have/has + done +.否定形式:S + have not/has not + done+.疑问形式:Have/Has + S + done +.被动语态:have /has +been +done现在完成时用法(一)一已完成、影响性用法现在完成时表示动作开始于过去,结束于过去,
4、但对现在仍有影响或造成结果。 通常与表示包括现在在内的时间副词just, already, yet, never, ever, lately, recently等状语连用。练习一:1. I(have) lunch already.2. the train(arrive) yet?3. Tom never(be ) to China.4. The twins just(see) my father.现在完成时用法(二)一未完成,延续性现在完成时强调动作或状态发生于过去一直延续到现在,且有可能继续下去(适 用于延续动词);可以和表示从过去某一时刻延续到现在的一段时间的状语连 用, 如 so far
5、, up till now, up to now, in/ during the last/ past years, recently, lately, by this time, since 等。练习二:1. We(study) English for about four years.2. We(live) in Yucai Middle School since 2007.3. I(not see) Mary so far.4. I(hear) nothing from him up to now.5. He(not talk) with me in the past few days.
6、注意!瞬时动词在现在完成时中的用法:瞬间性动词如 arrive, join , die, get, come, buy, sell, leave, borrow, marry 等, 以及终止性动词如start, begin, finish等,在现在完成时的肯定形式中不能与 “for + 一段时间”的时间状语连用,但可以用在否定句或这些动词对应的状态动 词中。为了表述这种意思,我们常用相应的延续性动词have, keep, be等来代替 非延续性动词。练习二:I.判断正误:)1. He has left home.() 2. He has left home for 10 years.()3.H
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