The present perfect tense现在完成时1.过去某一时间点发生的动作对现在产生影响。功能：2.过去某一时间点发生的动作持续 到现在或还将持续下去。The present perfect tense助动词 （可以帮助构成肯定、疑问和否定句）1.He has cleaned his room. (写一个一般疑问句）Has he cleaned his room?2. She has lived in London for four years. (划线部分提问）How long has she lived in London?3. He has been to China, ____ ____? （写出反义疑问句部分）hasn’t he 4. They have come back from work. (写否定句）They haven’t come back from work. What are the key words for the Present Perfect Tense?A: ______ your brother ______ his homework yet? (finish)B: Yes, he ‘s already done it.Key wordsHas finished yet already 注意：already 用肯定句， yet 用疑问句和否定句中A: _______ you ever _______ to the park? ( be )B: No, never. Key wordsHave been yet already ever never 注意： ever 曾经 用疑问句中 never 从不 带有否定意义I ______ just ________ the desk, you can take it to your classroom . (mend )Key wordshave mended yet ever never just already Just 与现在完成时连用 一般置句中Just now 才 与一般过去时连用Tom ___________ in the factory since he left school ten years ago. (work )Key wordshas worked yet ever neve |
