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1、 一、现在完成时谓语动词的构成： 助动词have/has(not) +V-ed（P.P.过去分词） I _(finish) the composition already. He _(learn) English for three years. We/You/ They. She.have finishedhave finishedhas learnedhas learned标志词：already-yet ever-never just once/twice before I _ (do) my homework already. He _(not finished) his homewor
2、k yet. _you ever _ (be) to Haiwaii? We _ never _ (see) such an exciting match before. Mother _ just _(clean) the house. Please dont come in. They _(practice) this dialogue twice.have done has not finished Havebeen haveseenhascleanedhave practiced用法2：表示动作或状态从过去 开始一直持续到现在甚至将来Jeff borrowed the books tw
3、o days ago. Jeff has kept the books for two days.切记用法2的动词仅限于持续动词 ：buy borrowopen closeleave diejoin begin -have - keep-be open -be closed -be away -be dead -be a member -be on 标志词：for +一段时间, since+过去的时间点, these years, so far, in the past/last years We _ (learn) English for three years/ since two yea
4、rs ago/since 2000. Mr. Green _ (be) in China these years. They _(write) 15 songs so far. The population _ (grow) more slowly in the past ten years.have learnedhas beenhave written has grownhave/has gone to have/has gone to have/has been in have/has been in have/has been to have/has been to 1.A: Wher
5、es Jim, Li Lei? B: He _he school library. 2.The Greens _China for three years. We _the Great Wall twice. Its very beautiful.has gone to have been inhave been toBA ABB stay A现在完成时和一般过去时现在完成时和一般过去时He _(work) in our school for one year. He _(come) to our school last year/in 2002. They _(cook) the supper already. They _ (cook) the supper half an hour ago.has workedhas worked camecame have cookedhave cooked cookedcooked
