人教版九年级英语下册 Unit12第3课时 教学课件PPT初三公开课

1、Unit 12 Life is full of the unexpected.Section A Grammar Focus-4c初中英语 九年级下册 RJNew words: cream, workday, bean, marketExpressions: show up, by the end ofGrammar: past perfect tense, simple past tenseSentences： When I got to school, I realized that Ihad left my backpack at home. By the time I got back

2、 to school, the bell had rung. As I was waiting in line with the other office workers, I heard a loud sound.Learning goalsListen to the story and underline all the verbs in the passage which tell us what happened some time ago and what had happened some time before.Warming upMy old friend, Harrison,

3、 had lived in the Mediterranean for many years before he returned to England.He had often dreamed of retiring in England and had planned to settle down in the country. He had nosooner returned than he bought a house and went to live there. Almost immediately he began to complain about the weather, f

4、or even though it was still summer, it rainedcontinually and it was often bitterly cold. After so many years of sunshine, Harrison got a shock. He acted as if he had never lived in England before. In the end, it was more than he could bear. He had hardly had time to settle down when he sold the hous

5、e and left the country. The dream he had had for so many years ended there. Harrison had thought of everything except the weather.Discussion在故事中，为什么分别使用一般过去时和过去完成时？在使用不同时态时，这些句子的动作有什么先后顺序？语法概述过去完成时由“助动词had (用于各种人称和数) + 过去分词”构成，表示某动作或状态在过去某一时间或 动作之前已经发生或完成，它表示动作发生的时间是 “过去的过去”。过去完成时现在将来从过去之前的某个时间点 到过去

6、的某个时间点为止（先发生） 过去的过去（后发生） 过去某时Grammar FocusWhen I got to school, I realized that I had left my backpack at home.By the time I got back to school, the bell had rung.Before I got to the bus stop, the bus had already left.I was about to go up to my office when I decided to get a coffee first.As I was wa

7、iting in line with other office workers, I heard a loud sound.Read the following sentences and classify them accordingto different tenses.时。主句为过去完成时，从句是一般过去时，主句动作发 生在从句之前。When I got to school, I realized that I had left my backpack at home.By the time I got back to school, the bell had rung.Before I

8、 got to the bus stop, the bus had already left.两个动作同时进行,主、从句都是一般过去时或过去进行I was about to go up to my office when I decided to get a coffee first.As I was waiting in line with other office workers, I heard a loud sound.Discuss and answer the questions in groups.When he came in, the students stood up.Wh

9、en the baby saw her mother, she stopped crying.He was about to watch a movie when his parents knocked at the door.They were about to get on the bus when they heard someone shout.As I was standing in front of the teachers office, I saw a boy running to the classroom.As he was doing the housework, a b

10、ird flew into the kitchen.1.在以上的时间状语从句中，主句和从句的动作是 先后发生还是同时发生?2.主从句都用过去时态的时间状语从句的引导词有 哪些?When he came in, the students stood up.When the baby saw her mother, she stopped crying.He was about to watch a movie when his parents knocked at the door.They heard someone shouting behind them when they were ab

11、out to get on the bus.1. 在A以s 上I w的a时s s间ta状nd语in从g 句in中fr，on主t o句f和th从e t句ea的ch动er作s是of同fi时ce发, I生， 或者s是aw在a进bo行y一si个ng动in作g 时in ，ou另ts外id一e t个he动c作las突sr然oo发m生. 。As he was doing housework, a bird flew into the2. 主k从itc句he都n.用过去时态的时间状语从句引导词有when, as 等。When I got up, I found that my bother had alrea

12、dy gotten in the bathroom.When she got to the check-out, she realized she had left her purse at home.Before I arrived at the airport, the plane had already taken off.They had already had breakfast before they got to the hotel.Most of the guests had left by the time he arrived at the party.The film h

13、ad already begun by the time I got to the cinema.Read these sentences.过去完成时过去完成时的句式结构肯定句：主语 + had + 过去分词 + 其他.否定句：主语 + hadnt + 过去分词 + 其他.一般疑问句：Had+ 主语 + 过去分词 + 其他? 肯定回答：Yes, 主语 + had.否定回答：No, 主语 + hadnt.2. 过去完成时的用法表示一个动作或状态在过去某一时间动作之前已经 发生或完成，常与by、 before等构成的时间短语连 用。常用在said、told、knew、heard、realized等

14、后面的 宾语从句中。在含有when、 before等引导的时间状语从句的复合句中， 如果从句的时态为一般过去式，主句常 用过去完成时。过去完成时是一个相对的时态，只有和过去的某个时间或动作相比较时才会用到，因此可通过分析语 境来确定时态。A. began; getB. had begun; had gotC. had begun; got(巴中中考) My parents Cto work by the time I up.3. 一般过去时和过去完成时的区别一般过去时表示过去某时间发生的动作或存在的状 态，而过去完成时则表示过去某一时间以前（即过 去的过去）发生的动作或存在的状态。4a Mak

15、e sentences using by the time or before.1. Tim went into the bathroom. Mary got up._By_t_h_e_t_i_m_e Ma_r_y_g_o_t_u_p_,_Tim ha_d_a_l_r_ea_dy_g_o_n_e_i_n_t_o_t_h_e_ba_th_r_oom.The coffee became cold. I put cream in the coffee._Be_fo_r_e I_c_o_u_ld p_u_t_c_r_e_a_m i_n_t_h_e co_f_f_e_e_, _th_e c_o_ff_e

16、_e_h_a_d b_e_c_o_m_e co_l_d_._The teacher collected the math homework.I got to school._By_t_h_e_t_i_m_e I_g_o_t_t_o_s_c_h_o_o_l_, _th_e t_ea_c_h_e_r h_a_d_c_o_l_le_c_t_e_d_t_h_e m_a_t_h h_o_m_e_wo_r_k.n. 奶油；乳脂I completed the work for my boss. The workday ended._I_h_a_d c_o_mp_le_t_e_d_t_h_e_wo_r_k_f

17、_o_r_my b_o_ss b_e_fo_r_e th_e_w_o_r_k_da_y_e_n_d_e_d_._The movie started. I arrived at the cinema._T_h_e_mo_v_i_e_h_a_d a_lr_e_a_d_y st_a_r_t_e_d_b_e_f_o_r_e_I_a_r_r_i_v_e_d_a_t_th_e c_in_e_ma_. My mother finished making the apple pie.I got homefrom my language course._B_y_t_h_e ti_m_e I_g_o_t_h_o_

18、me_f_r_o_m my_l_a_n_g_u_a_g_e_c_o_u_r_s_e_, _m_y m_o_t_h_e_r_ha_d_f_inis_h_e_d_ma_k_i_n_g_t_h_e a_p_p_le p_ie_.Write the past form and past participle for the followingverbs.原形rush forget arrive go show find过去式 rushed forgotarrived went showed found过去分词 rushed forgottenarrived gone shown found4b Fil

19、l in the blanks with the correct forms of the words in the box.rush out forget arrive at go into show up find outBy the time I arrived at the party, everyone else _h_a_d_ already _s_h_o_w_n u_p_.When he put the noodles into a bowl, he realized he _h_a_d_f_o_r_g_o_t_te_n_ to add the green beans.By th

20、e time my mother came back from the market, I h_a_dalready _r_u_s_h_e_d_o_utof the door to go to my piano lesson.4. Before she got to the airport, she_h_a_d fo_u_nd_o_u_t_ about the earthquake.When she _a_r_r_iv_e_d a_t the movie theatre, she remembered she had forgotten to feed her dog.Before she g

21、ot a chance to say goodbye, he_ha_d_g_o_n_e in_t_o_ the building.rush out forget arrive at go into show up find outComplete the sentences. Make new sentences as many as possible.By the time I left for school in the morning, .By the end of the school day, .Complete the sentences. Make new sentences a

22、s many as possible.By dinner time,I .Complete the sentences. Make new sentences as many as possible.Language pointsBy the end of the school day, (教材P92 4c)by the end of在（某时间点）以前by the end of 含有“不迟于”的意思。通常情况下，根据by the end of后接的时间的不同，主句选用相应的时 态：(1) 接将来的时间，主句用一般将来时。By the end of next month, I will go t

23、o Shanghai to attend a meeting.By the end of last month, I had read 3 books.(2) 接现在的时间，句子用现在完成时。By now, we have learned 6 English songs.(3) 接过去的时间，句子用过去完成时。By the end of last month, I had read 3 books.4c Write two true statements and one false statement about your day yesterday. Then ask your classm

24、ates to guess the false statement.By the time I left for school in the morning, .By the end of the school day, .By dinner time, I .A. has been onC. had stoppedB. had been onD. had begunA. left; had arrivedC. left; arrivedB. had left; arrivedD. had left; had arrived1. (天水中考)By the time I got to the c

25、inema, the movie Bfor 10 minutes.2. Robert was very upset that most of his friends Bwhen he at the party.Exercises一、单项选择A. has left; comesC. had left; cameB. had left; would comeD. left; had comeA. has readC. will readB. readD. had readA. plantedC. will have plantedB. have plantedD. had planted3. She Cher keys in her office so she had to wait until her husband home.4. She said she Dthe story already.5. They D100 hundred trees by last weekend.二、句型转换I had cooked the dinner when my parents came back. (改为否定句)I _h_a_d_n_