英語《過去完成時》PPT課件.ppt

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過去完成時,By Villa,構成：助動詞had + 動詞的過去分詞（V.pp),用法：,1. 過去完成時動詞表示過去某一時間或某一動作之前完成的動作或狀態(tài)。在強調(diào)過去某一動作發(fā)生在另一動作之前時。,過去完成時：,在強調(diào)過去某一個動作發(fā)生在另一個動作前常常用過去完成時態(tài)。,1.他說他以前見過你。,He said that he ______________ (see) you before.,had seen,2. 到六點鐘為止他們已經(jīng)工作八小時了。,By six o’clock they ______________(work) for eight hours.,had worked,過去分詞的構成：,1. 規(guī)則動詞的變化：,a) 一般情況下在動詞后面加 ed,work ------ worked,play -------- played,b) 以 e 結(jié)尾的動詞直接加 d,use ------ used,refuse ------ refused,c) 以輔音字母加 y 結(jié)尾的動詞，把 y 改 i 再加 ed,study ----- studied,carry ----- carried,d) 以重讀閉音節(jié)結(jié)尾的，前面有單個元音字母時，雙寫輔音字母，再加 ed,stop ---- stopped,drop ------- dropped,2. 不規(guī)則動詞的變化見課本 94---96 頁,過去完成時的構成：由助動詞had + 動詞的過去分詞（V.pp),2. 過去完成時詞可以表示過去某一時刻之前發(fā)生的動作或呈現(xiàn)的狀態(tài)，這一動作一直持續(xù) 或?qū)⒗^續(xù)下去。,By six o’clock they ____________ (work)for eight hours.,When I came to GZ , he _____________(be) there for a long time.,用法：,1. 到了六點鐘為止，他們已經(jīng)工作了八小時了。,2. 我到廣州時，他在那里很長時間了。,had worked,had been,3.到上個月中旬我們在北京住了有五年時間了。,By the middle of last month we ______________(live) in Beijing for five years.,had lived,1. 到昨晚上，他已寫完那封信。,By yesterday evening he ___________ (write) that letter.,2. 他說他以前見過你。,He said that he ____________(see) you before.,3. 當我進來時，他已做完了作業(yè)。,When I came in he ________________(finish) his homework.,過去完成時與 by then(截止到那時); by 9 o’clock(直到九點鐘) by the end of …(在…結(jié)束/末之前); by the time…(在…時之前); up till then (直到那時); up until last night(直到昨晚）等連用，表示過去的過去。,had written,had seen,had finished,3. 過去完成時和 already, just, ever, yet 等連用表示過去的過去。,用法：,例如：1. 他告訴我說他們隊已經(jīng)贏了。,He told me that his team _________ already ___________ (win).,had,won,2. 她說她仍沒去過長城。,She said that she _______________(not go to) the Great Wall yet.,hadn’t been to,用法：,過去完成時與when, before, as soon as, till/ until 等引導時間狀語的從句連用，強調(diào)動作發(fā)生的時間前后。,例如：1. 她到家之前她的孩子已經(jīng)睡著了。,When she got home her children ____________(sleep).,had slept,2. 在他們到達之前電影已經(jīng)開始了。,Before they arrived here the film _________ already ___________ (start).,had,started,Last night, as soon as I _______________ (finish) my work I went to sleep.,3. 我完成作業(yè)了就去睡覺了。,had finished,1. After he ______________ (finish) his work he went out.,had finished,2. The children ran away after they ___________ (break) the window.,had broken,3. I went to Tom’s house but he __________ (go) out.,had gone,Exercises:,4. Annie told me that his father ____________ ( go ) to Paris and he ____________ ( come ) back in a few days.,had gone,would come,5. My friend __________ (buy) the car two years ago. He ________________ (buy) it for two years.,bought,has had,Exercises,