初中過去完成時

1、關(guān)于初中過去完成時第一張，PPT共十八頁，創(chuàng)作于2022年6月本課重點(diǎn)： 動詞過去分詞規(guī)則極不規(guī)則變化過去完成時用法 有時間狀語提示詞 無時間狀語提示詞過去完成時與現(xiàn)在完成時的區(qū)別過去完成時與一般過去時的區(qū)別第二張，PPT共十八頁，創(chuàng)作于2022年6月過去分詞的構(gòu)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 - playedb) 以 e 結(jié)尾的動詞直接加 d use - used refuse - refusedc) 以輔音字母加 y 結(jié)尾的動詞，把 y 改 i 再加 edstudy - studiedcarry - carriedd) 以

2、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 edstop - stoppeddrop - dropped2. 不規(guī)則動詞的變化見課本 附錄過去完成時的構(gòu)成：由助動詞had + 動詞的過去分詞（done)第三張，PPT共十八頁，創(chuàng)作于2022年6月構(gòu)成：助動詞had + 動詞的過去分詞（done)用法：1. 過去完成時動詞表示過去某一時間或某一過去動作之前完成的動作或狀態(tài),即“過去的過去”。過去完成時：下面按照有無時間狀語提示詞分為兩大類講解:第四張，PPT共十八頁，創(chuàng)作于2022年6月(一)有時間狀語提示類：(1)by+過去時間：e.g. by the time(在時之前),

3、by the end of (在結(jié)束/末之前), by then(截止到那時); (2)up to/till(直到)+過去時間： e.g. up till then (直到那時)等。1. 到六點(diǎn)鐘為止他們已經(jīng)工作八小時了。By six oclock they _(work) for eight hours.had worked2.到上個月末我們在北京住了有五年時間了。By the end of last month we _(live) in Beijing for five years.had lived第五張，PPT共十八頁，創(chuàng)作于2022年6月4. 到那時，他已寫完那封信。By the

4、time we got there， he _ (leave) already.had left3.當(dāng)我們到那兒時，他已經(jīng)離開了。Up till then， he _ (write) that letter.had written第六張，PPT共十八頁，創(chuàng)作于2022年6月（3）此外，過去完成時與when, before, after, as soon as, till/ until 等引導(dǎo)時間狀語的從句連用，強(qiáng)調(diào)動作發(fā)生的時間前后。1. 她到家之前她的孩子已經(jīng)睡著了。When she got home ， her children _ (sleep).had slept2. 在他們到達(dá)之前電

5、影已經(jīng)開始了。Before they arrived here, the film _ already _ (start).had started第七張，PPT共十八頁，創(chuàng)作于2022年6月3. 我打完植物大戰(zhàn)僵尸就去睡覺了。I went to sleep as soon as I _(play) “plants VS zombies”.had played4. 看了暮光之城許多次之后，她終于厭煩了。She finally got bored after she_( see ) the film “twilight” many times.had seen第八張，PPT共十八頁，創(chuàng)作于2022

6、年6月2. 她懷疑她是否通過了體育測試。had read1.他說他讀過這本書。He said that he _ (read) this book.She wondered if she _ （pass）the PE test.had passed(二)無時間狀語提示類先于某過去動作第九張，PPT共十八頁，創(chuàng)作于2022年6月4. 她不想看黑天鵝，因?yàn)樗呀?jīng)看過了。She didnt want to see the film “Black Swan” because she _(see) it.had seen3. 我聽說Justin Bieber已經(jīng)有過兩個女朋友了。I heard that

7、 Justin Bieber _(have) two girl friends.had had第十張，PPT共十八頁，創(chuàng)作于2022年6月過去完成時與現(xiàn)在完成時的區(qū)別過去完成時強(qiáng)調(diào)在過去某時間或過去某動作之前，即過去的過去。(1)按時間狀語區(qū)分，比較： by then/yesterday/last month等過去時間 +過去完成時 by now + 現(xiàn)在完成時 （by now = so far） by the end of + last month/year等過去時間+過去完成時 by the end of + this month/year等現(xiàn)在時間+現(xiàn)在完成時（*注：by the end

8、 of this month/year還可能跟將來完成時）第十一張，PPT共十八頁，創(chuàng)作于2022年6月 up to/till then + 過去完成時 up to/till now + 現(xiàn)在完成時by the time +人稱+ did + 過去完成時 by the time + 人稱+ do + 現(xiàn)在完成時第十二張，PPT共十八頁，創(chuàng)作于2022年6月Exercises:So far, I _(collect) 100 stamps.By the end last year, the factory _(produce) 100,000 shoes.Tom _ (learn) Englis

9、h for 4 years since 2007.Mom _(in) the kitchen by the time I finished my homework.Sakura _(study) in this school for about 9 years up till now.He _(away) from his hometown up to then.The dog _ (die) for 3 weeks and Mary still feels sad.第十三張，PPT共十八頁，創(chuàng)作于2022年6月(2)按是否體現(xiàn)某動作在另一過去動作之前發(fā)生區(qū)分：有標(biāo)志詞：when, befor

10、e, after, as soon as, till/ until等When she got home， her children had slept.Before they arrived here, the film had already started.He said that he had met you.She wondered if she had passed the PE test.無標(biāo)志詞：賓語從句等第十四張，PPT共十八頁，創(chuàng)作于2022年6月Exercises:1.Jake _(be) Beijing for 3 month before he came back.2.

11、I went home as soon as the sun _(go) down.3.Jim bought a set of combs for his wife after he_ (sell) his watch chain.4.I didnt go to bed until the program _(finish).5.Mom asked if I _(have) breakfast this morning.6. I didnt expect that because I _(prepare) for such a surprise.7.You would have lost th

12、e game if he _(help) you.8.I went to Toms house but he _ (go) out.第十五張，PPT共十八頁，創(chuàng)作于2022年6月過去完成時與一般過去時的區(qū)別一般過去時常見標(biāo)志詞：比較：He had been a student for 8 years by the time he was sixteen.He was a student 8 years ago.They had packed all their things before they went to the airport.They packed all their things yesterday.第十六張，PPT共十八頁，創(chuàng)作于2022年6月Exercises:He _(lend) $100 a month ago.Sally _(buy) an ipod touch the day before yesterday.Joe _(run) 3