人教版八年级英语下册 Unit8第3课时 教学课件PPT初二公开课

1、Unit 8 Have you read Treasure Island yet?Section A Grammar Focus-4c初中英语 八年级下册 RJLearning goalsNew words: fiction, technology, FrenchExpression: science fictionSentences: Have you read Little Women yet?Yes, I have./No, I havent. Has Tina read Treasure Island yet?Yes, she has. She thinks its fantastic

2、. Have you decided which book to write about yet? Yes, I have. Ive already finished reading it. It was really good.Warming upA short video to understand the present perfect.Have you read Little Women yet?Yes, I have./No, I havent.Has Tina read Treasure Island yet?Yes, she has. She thinks its fantast

3、ic.Have you decided which book to write about yet?Yes, I have. Ive already finished reading it. It was really good.Find the present perfect tense.Grammar FocusHow is the present perfect tense formed?have/has + 过去分词Have you read Little Women yet?Yes, I have./No, I havent.Has Tina read Treasure Island

4、 yet?Yes, she has. She thinks its fantastic.Have you decided which book to write about yet?Yes, I have. Ive already finished reading it. It was really good.What adverbs are often used with the present perfect?Already and yet.Have you read Little Women yet?Yes, I have./No, I havent.Has Tina read Trea

5、sure Island yet?Yes, she has. She thinks its fantastic.Have you decided which book to write about yet?Yes, I have. Ive already finished reading it. It was really good.含现在完成时的句子 如何构成一般疑问句？将助动词have/has 放在主语之前。Have you read Little Women yet?Yes, I have./No, I havent.Has Tina read Treasure Island yet?Ye

6、s, she has. She thinks its fantastic.Have you decided which book to write about yet?Yes, I have. Ive already finished reading it. It was really good.一、现在完成时的基本结构和主语一致现在完成时由“助动词 have/has + 过去分词”构成， 其基本句式结构为：have/has 常可缩略为 -ve/-s 肯定句：主语 + have/has + 过去分词 + 其他.I have seen this film. 否定句：主语 + have/has n

7、ot + 过去分词 + 其他.I have not seen this film.Presentation现在完成时态（1） 一般疑问句：Have/Has + 主语 + 过去分词 + 其他? 肯定回答：Yes, 主语 + have/has. 否定回答：No, 主语 +havent/hasnt. Have you seen the film?Yes, I have. / No, I havent.have not = havent; has not = hasnt二、过去分词的变化1. 规则变化（与动词过去式规则一样，此类称作规则 动词）重读闭音节以一般在词尾直 接加-ed以不发音的e 结尾的，

8、加-d以“辅音字母+ y”结尾的变y 为i加-ed一个辅音字母 结尾的，双写 这个辅音字母后加-edworkworkedsliceslicedstudystudiedstopstopped2. 不规则变化（此类称作不规则动词，有很多）原形过去式过去分词bewas/werebeenhavehadhadchoosechosechosenputputputrunranrun参看课本P136-137 Irregular Verbs（不规则动词表）三、现在完成时的用法1. 表示过去发生或已经完成的动作对现在造成的影响 或结果。常和 just（刚刚）、already（已经）、yet（还，仍然）、ever（

9、曾经）、never（从未）、before（以前）、so far（到目前为止）等连用。 Have you had your breakfast yet? Yes, I have. Ive just had it.Have you ever heard of this song?No. Ive never heard of it before.Julia has collected over 100 beautiful hair clips so far.I had breakfast.Im not hungry now.pastpresentI have already had breakfas

10、t.（早餐过去吃的，现在不饿。）图示法表示现在完成时用法1：表示过去发生或已经完成的动作对现在造成的影响或结 果；2. 现在完成时还可以表示过去某一时间开始并一直持续到现在的动作或状态，常与“for + 时间段”或 “since + 时间点 / 从句”连用，这时要用延续性动词。They have worked in this company for 30 years.He has been in the army since 2016.（错：He has joined the army since 2016.）【特别提醒】如果要对 for 或 since 短语提 问，疑问词用 how long

11、。How long have you lived in this area?For at least 10 years.图示法表示现在完成时用法2：表示过去某一时间开始并一直持续到现在的动作或状态。I moved here in 1990.I still live here.pastpresentI have lived here for 30 years.（30年来一直生活在这里）四、already 与 yet 在现在完成时中的用法辨析yet常用于否定句或疑问句句 末。用于表示某事尚未发 生或某情形尚未出现，或 用于询问某事是否已经发 生。He hasnt finished the book

12、 yet.Have you seen him yet?already常用于肯定句中，用于强 调某事已经开始出现；也 可用于疑问句中，表示因 某事的发生早于预料而感 到吃惊。They have already known each other. Have you eaten all that food already?五、现在完成时 VS. 一般过去时1. 现在完成时表示过去发生的某一动作对现在造成的 影响或结果，强调的是现在的情况，因此不能和表 示过去的时间状语连用。I have already done my homework.（不能用last night等）Ive been to Pari

13、s before.（不能用last year等）2. 一般过去时只表示过去的动作和状态，与现在无关。 可以和表示过去的时间状语连用。I did my homework last night.When did you go to Paris? （when一定不要和现在完 成时连用）3. 日常对话中通常两种时态配合使用，开始提到一件 事做没做或发生过时用现在完成时，说起这件事具 体情形时用一般过去时。Have you been to Japan?Yes, I have. I went there last year.Who did you go with?4a Use the words in b

14、rackets to complete the conversations.Tip: Find the key words to identify which tense to use.A: Would you like something to drink?B: No, thanks. I_v_e ju_s_t_d_r_u_n_k_s_o_me_te_a. (just/ drink some tea)A: I heard you lost your key. H_a_v_e y_o_u_f_o_u_n_d_i_t _y_e_t ? (find)B：No, not yet.3. A: Do y

15、ou know when Tom is leaving?B:. (already /leave)A: When? (leave)B: This morning.4. A: Is your sister going to the movies with us tonight?B: No. (already / seethe film)H_e h_a_s _a_lr_e_a_d_y_l_e_ftd_i_d_h_e le_a_v_eS_h_e h_a_s_a_lr_e_a_d_y_s_e_e_n_t_h_e_f_i_lm5. A: What do your parents think about o

16、ur plan?B: I. (not / tellthem / yet)h_a_v_e_n_o_t_/h_a_v_e_n_t _to_l_d_t_h_e_m y_e_t4b Fill in the blanks with the correct forms of the words in brackets.Tip: Find the key words to identify which tense to use.Sally _l_o_v_e_s_(love) reading. In the morning, she reads thenewspaper and in the evening

17、she reads books. She h_a_salready r_e_a_d (read) more than 100 different fiction n. 小说 science fiction 科幻小说（或影片等）books! Her favorite kind of books is science fiction. Shen. 科技；工艺is interested in science and technology and loves toimagine what the world w_i_ll_b_e(be) like in 50 years. She _f_i_n_is_

18、h_e_d_ (finish) reading a book about robots last week and w_i_ll_wri_te_ (write) a book report about it nextn. 法语week for her French class. Every time she is in the library,Sally looks at the many books sheh_a_s_n_t_r_e_a_d_(not read)cant wait to do sth.迫不及待做某事 yet and she cant wait to read them!A:

19、What do you think of them?B: Well, I think Harry Potter was exciting, but Tom Sawyer was a bit boring.你觉得它们如何？4c Complete the chart with information about you and a friend.A: What books have you already read?B: Ive already read Tom Sawyer and Harry Potter.YouYour friendCommentsBooks I have already r

20、eadMovies I have already seenSongs I have already heardInstructions on 4c:First, fill in the first column according to actual situation.Then, ask and answer in pairs to fill the second and the third columns.Now write a short paragraph using the information in the table and report to class.Example:Iv

21、e already read the book . I think its . My friend has read a book called . He/She thinks its and he/she1. (安徽中考) Its ten years since we came here.How time flies! Wein China for so long.DA. workB. workedC. will workD. have worked(2021安徽中考) Our computer is working again!Yes. Our IT teacher Ait. It too

22、k him about an hour.A.has fixedB.will fixC.is fixingD.was fixingExercises一、单项选择拍中国) is wonderful. So far, Iit three times.A. watchedB. will watchC. have watchedD. watch3. (2021河北中考) William Csix books, and all of them are bestsellers.A. will writeB. is writingC. has writtenD. was writing4. (2021云南中考

23、) The documentary Aerial China(航CA. yet; yetC. already; yetB. yet; alreadyD. already; already6. (2021武汉中考) What good books did you readrecently? ITales of China since last year, andnow the third time.A. readB. am readingC. have readD. will read5. Has your sister finished reading B? Yes. She has fini

24、shed.C3. Tom wont go to the cinema with us because healready(see) the film.二、用所给单词的适当形式填空1. She _h_a_sn_t_r_e_ad(not read) the book yet.2. H_a_v_eh_a_sse_e_nyou _d_e_c_i_d_ed(decide) which book to buy yet?4. David hasnt _f_i_n_is_h_e_d_(finish) _r_e_a_d_in_g(read) Harry Potter yet.We h_a_v_ejust cle

25、aned(clean) the classroom. I l_e_n_t (lend) my bike to her yesterday, but she h_a_s_n_t_g_i_v_e_n_ (not give) it back to me yet.(2021南京中考改编) I saw Julia in April and I h_av_e_n_t_s_e_e_(not see) her since then.三、按要求改写句子，每空一词1. She has already written the music. (改为一般疑问句). Ha_s she written the music?y_e_tThey studied English 2 years ago. (用 since 2 years ago改写)They h_a_v_e_studiedEnglish sinc