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课件网) Unit 6 Wisdom counts Section 2 Grammar 2024新版沪教牛津8上 I was a student 25years ago. Now, I am a teacher. 一般过去时 定义:表示过去发生的动作或存在的状态 时间标志词:明确的过去时间 just now, yesterday，two days ago, last week, in 1998，the day before yesterday, this morning…… 一般过去时 The boy opened the door. The boy has opened the door. The door is open now. 过去 现在 过去发生的动作对现在有影响 现在完成时 She has just had her lunch. 她刚吃过午饭。 →表示她现在不饿 She had her lunch two hours ago. 她两小时前吃了午饭。 →现在完成时（有影响） →仅说明事实，不知道她现在饿不饿。 →一般过去时（只说明） 现在完成时和一般现在时的区别 the present perfect：talk about past events with a connection to the present. the simple past：talk about a completed action in the past. 现在完成时：强调过去发生的动作对现在造成的影响或结果，强调现在的情况，（既有过去也有现在） 一般过去时：单纯地强调过去某个时间发生的动作或存在的状态，与现在没有直接的关联，（只有过去） 现在完成时（强调目前情况）通常不与表示过去时间的词语连用，如yesterday, last week, then, three days ago, in 2000等。 如：I have visited the Bund yesterday. 现在完成时和一般现在时的区别 visited 现在完成时：表示过去开始的动作一直持续到现在，并且可能还会继续下去。常与连词 for/since连用，也与延续性动词搭配，用于表明动作或状态持续的时间。 一般过去时：表示过去某个时间点或时间段内完成的动作，动作在过去就已经结束，一般不强调持续性。 例:You have helped me a lot. 你已经帮了我很多忙了。 （到目前为止） My grandmother took good care of me. 我外婆曾悉心照顾我。 （在她活着的时候） 现在完成时和一般现在时的区别 如果与表示“到现在为止的某个/任意时间”的词语连用，如ever, before, never, yet, recently, already, lately等，通常用现在完成时。如： I have never seen that film. I have read the book recently. 现在完成时和一般现在时的区别 当现在完成时和 today、this week 等表示“未完成”的时间状语连用时，表示动作或状态可能会再次出现。 当一般过去时和 today、this week 等表示“未完成”的时间状语连用时，表示动作或状态不会再次出现。 例：莉莉这个月给我写了几次信。 ①Lily has written to me several times this month. (这个月她可能还会再给我写信) ②Lily wrote to me several times this month. (这个月她不会再给我写信) 现在完成时和一般现在时的区别 has lasted → lasted have been → were have had → had has started → started learnt → has learnt opened went bought have never been visited have seen bought have read Maria _____ never _____ (be) to Paris. His grandfather _____ (die) ten years ago. I’m not hungry. I just _____ (have) dinner. I _____ (know) her since I was little. Li Hui _____ (study) English since he was (be) seven. She _____ (live) in Guangzhou since 1996. —_____ you ever _____ (be) to London —Yes, I _____ (go) there last year. Shenzhen _____ (change) a lot in recent years. Time flies—we _____ (live) in the same house for 20 years now! Someone _____ (steal) my neighbour’s bike yesterday. 用所给词的适当形式填空。 has died had have known has studied has lived been went ... ...
