1、過去完成時構成：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 seen2. 到六點鐘為止他們已經(jīng)工作八小時了。By six oclock 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

2、play - playedb) 以 e 結尾的動詞直接加 d use - used refuse - refusedc) 以輔音字母加 y 結尾的動詞，把 y 改 i 再加 edstudy - studiedcarry - carriedd) 以重讀閉音節(jié)結尾的，前面有單個元音字母時，雙寫輔音字母，再加 edstop - stoppeddrop - dropped2. 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) 或將繼續(xù)下去。By six oclock

3、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 workedhad been3.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 lived1. 到昨晚上，他已寫完那封信。By yesterday evening he _ (write) that lette

4、r.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 oclock(直到九點鐘) by the end of (在結束/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 writtenhad seenhad finished3. 過去完成時和 already,

5、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).hadwon2. 她說她仍沒去過長城。She said that she _(not go to) the Great Wall yet.hadnt 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 _(

6、sleep).had slept2. 在他們到達之前電影已經(jīng)開始了。Before they arrived here the film _ already _ (start).hadstartedLast 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 finished1. After he _ (finish) his work he went out.had finished2. The children ran away after they _ (break) the window.had broken3. I went to Toms house but he _ (go) out.had goneExercises:4. Annie told me that his father _ ( go ) to Paris and he _ ( come ) back in a few days.had gonew