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初中过去完成时ppt资料讲解

4. 她不想看《黑天鹅》,因为她已经看过了。 She didn’t want to see the film “Black Swan” because she _h__a_d_s_e_e_n_____(see) it.
过去完成时与现在完成时的区别
过去完成时强调在过去某时间或过去某动作之前,即过 去的过去。
(1)按时间状语区分,比较:
by then/yesterday/last month等过去时间 +过去完成时
by now + 现在完成时
(by now = so far)
by the end of + last month/year等过去时间+过去完成时
by the end of + this month/year等现在时间+现在完成 时
stop ---- stopped drop ------- dropped
2. 不规则动词的变化见课本 附录
构成:助动词had + 动词的过去分 词(done)
用法:
1. 过去完成时动词表示过去某一时间或某 一过去动作之前完成的动作或状态,即“过 去的过去”。
下面按照有无时间状语提示词分为两大类讲解:
(sleep). 2. 在他们到达之前电影已经开始了。
Before they arrived here, the film ___h_a_d____ already ___st_a_r_t_ed____ (start).
3. 我打完植物大战僵尸就去睡觉了。 I went to sleep as soon as I ___h__a_d__p_la_y_e_d_____ (play) “plants VS zombies”.
本课重点: ·动词过去分词规则极不规则变化 ·过去完成时用法
·有时间状语提示词 ·无时间状语提示词 ·过去完成时与现在完成时的区别 ·过去完成时与一般过去时的区别
过去分词的构成: 过去完成时的构成:由助动词 1. 规则动词的变化: had + 动词的过去分词(done)
a) 一般情况下在动词后面加 ed work ------ worked play -------- played
b) 以 e 结尾的动词直接加 d
use ------ used
refuse ------ refused
c) 以辅音字母加 y 结尾的动词,把 y 改 i 再加 ed
study ----- studied carry ----- carried
d) 以重读闭音节结尾的,前面有单个元音字母时, 双写辅音字母,再加 ed
He said that he ___h_a_d__r_ea_d_____ (read) this book.
2. 她怀疑她是否通过了体育测试。
She wondered if she __h__a_d__p_a_s_se_d___ (pass) the PE test.
3. 我听说Justin Bieber已经有过两个女朋友了。 I heard that Justin Bieber _h__a_d_h_a_d____(have) two girl friends.
(一)有时间状语提示类:
(1)by+过去时间:e.g. by the time…(在…时之前), by the end of …(在…结束/末之前), by then(截止到那时);
(2)up to/till(直到)+过去时间: e.g. up till then (直到那时) 等。
1. 到六点钟为止他们已经工作八小时了。 By six o’clock they __h_a_d__w_o_r_k_e_d___(work) for eight hours. 2.到上个月末我们在北京住了有五年时间了。 By the end of last month we _____h_a_d_l_iv_e_d___
(3)此外,过去完成时与when, before, til 等引导时间状语的从句连用,强调动作发生的 时间前后。
1. 她到家之前她的孩子已经睡着了。 When she got home , her children _h_a_d__s_le_p_t__
(*注:by the end of this month/year…还可能跟将来完成时)
by the time +人称+ did + 过去完成时 by the time + 人称+ do + 现在完成时
up to/till then + 过去完成时 up to/till now + 现在完成时
So far, I _______(collect) 100 stamps. By the end last year, the factory ______(produce) 100,000 shoes. Tom ______ (learn) English 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.
4. 看了《暮光之城》许多次之后,她终于厌烦了。 She finally got bored after she___h_a_d__s_ee_n______ ( see ) the film “twilight” many times.
(二)无时间状语提示类 1.他说他读过这本书。
☆先于某过去动 作
(live) in Beijing for five years.
3.当我们到那儿时,他已经离开了。 By the time we got there, he _h_a_d__le_f_t_ (leave) already.
4. 到那时,他已写完那封信。 Up till then, he _h_a_d_w__r_it_t_en__ (write) that letter.
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