【课件】Unit+3Discover+Useful+Structures+课件人教版选择性必修第二册

理解“过去的过去” ：
例：The film had begun before we got to the cinema. 我到达电影院之前电影已经开始了。 先发生的动作用过去完成时，后发生的动作用一般过去时。
had begun 过去的过去
got 过去
现在
2 .过去完成时(Past Perfect) 结构？
2. A rescue worker risked his life saving two tourists who _h_a_d_b__ee_n__t_ra_p__p_e_d_ (trap) in the mountains for two days. (2018北京)
3. I was sent to the village last month to see how the development plan _h_a_d__b_e_en__c_a_r_r_ie_d_ (carry) out in the past two years. (2018江苏卷)
UNIT 3 FOOD AND CULTURE
Discover Useful Structures
过去完成时
1：什么是过去完成时(Past Perfect)？
The Smiths had just left when you rang.
1.什么是过去完成时？
基本定义： 过去完成时是表示过去某个时间之前已经发生的动 作或一直延续的动作或状态。常与already，yet, still等时间状 语连用，也可用于虚拟语气。
e.g. It was the most interesting movie that he _h_a_d__w_a_tc_h_e_d___
(watch).
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用于虚拟语气中
肯定结构
had＋been done
否定结构
had＋not＋been done
By the time the policeman __g_o_t___(get) to the shop, Tom __h_a__d_r_u_n__(run) away.
过去完成时常用于一些固定句型：
(1) It / This / That was the first / second ... time + that sb had done sth.
特殊疑问结构 特殊疑问词＋had＋主语＋been done
1. It _h_a_d_b_e_e_n__k_n_o_w_n_ (know) for a long time that Yellowstone was volcanic in nature — that’s what accounted for all its hot springs and other steamy features. (2019江苏)
The train __h_a_d_l_e_ft_ (leave) before we reached the station.
By nine o'clock last night，we __h_a_d_g_o_t_(get) 200 pictures from the spaceship.
[典例1]By the end of June, they __h_a_d__tr_e_a_te_d___ (treat) over 800 patients.
e.g. It was the third time that he _h_a_d__m_e_n_t_io_n_e_d_ (mention) his mother in his speech.
(2) It/This/That was the +形容词最高级+可数名词单数
+that sb. had done sth.
3.过去完成时(Past Perfect)运用
在by, by the end of, by the time, before后接表示过去某一时间的 短语或从句。
e.g. By the end of last year, we __h_a_d__p_r_o_d_u_c_ed_ (produce) 20, 000 cars.
2.过去完成时的结构？
When the police arrived, the thieves had run (run) away. (逃走在前，警察到达在后)
After we had landed, the plane was searched thoroughly. （落地在前，搜查在后）
Halen said she had moved to another flat. (说之前已经搬家)
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