8bunit3grammar.ppt

1、8B Unit 1 Past and Present Grammar English Teaching-group of Grade Eight,Learning aims:,1. Master the structure and basic usage of present perfect tense (PPT). （掌握现在完成时的基本结构、用法。） 2. Learn the rules of forming the past participle of verbs. （学习动词的过去分词变化规则。） 3. Learn some time expressions usually used

2、in PPT. （学习常用在现在完成时里的时间表达方式。）,How long has Mr. Chen lived in Sunshine Town? 2. What has the government done to part of the town center? 3.Why does Mr. Chen think it is impossible to see his old friends as often as before?,Step1: Lead-in Ask and answer,He has lived there since he was born.,The govern

3、ment has turned part of the town center into a new park.,Because his friends have moved away.,Pre task:Learn on their own and answer When do we use present perfect tense?,We use the present perfect tense to talk about an action that started in the past and continues to the present.表示过去开始，现在还在继续的动作。,

4、We use the present perfect tense to talk about an action that happened in the past and has a connection with the present. 表示过去发生的或已完成的动作对现在造成的影响或结果。,Past,present,Eddie has eaten my food.,Eddie ate the food and now Hobo has nothing to eat.,We also use the present perfect tense to talk about how many

5、times an action has happened till now. 谈论动作已经发生了很多次。,I have already read this book many times.,We use the simple past tense to talk about what happened at a definite time in the past.（一般过去时谈论在过去的特定时间发生的事）,Step3: While task Task1: Group work Make a conclusion about the basic structure of PPT,Have/ Ha

6、s + 主语 + 动词的过去分词,一般疑问句,Adverbs of time,already: 肯定句，表示已经发生 ever: 疑问句，表示“曾经” for: 肯定句/疑问句/否定句，表示一段时间 just: 肯定句，表示“刚刚” never: 否定句，表示“从不” recently: 肯定句/否定句/疑问句，表示“最近” since: 肯定句/否定句/疑问句，表示“自-以后” yet: 疑问句/否定句，表示“已经”或者“还没有”,Exercises,1. I _(have) lunch already. 2. Has the train_ (arrive), yet? 3.Tome _ n

7、ever_ (be to ) China. 4. The twin _just _(see) my father. 5. The twins _(see) my father just now.,have had,arrived,has,been to,has,seen,saw,1 Have you done your homework _ ? ( for, just, yet) 2 I have _ been to Chengdu. ( for, never, yet) 3 He has worked there _ he left school. (already, just, since

8、) 4 She has known Sam _ nine years. ( for, never, since) 5 Have you _ ridden a horse? ( ever, for, yet),yet,never,since,for,ever,6 They have _ arrived. (ever, just, yet) 7 He has _ washed the dishes ( already, ever) 8 We have not completed the project _ .(already, for, yet),just,yet,already,Forming

9、the past participle of verbs,Step3: While task Task2: Learn the rules,move live love like,写出下列动词的过去式和过去分词:,visit repair watch finish,visited visited repaired repaired watched watched finished finished,moved moved lived lived loved loved liked liked,verbed,以e结尾d,写出下列动词的过去式和过去分词:,stop mop trap plan,st

10、opped stopped mopped mopped trapped trapped planned planned,注:以一个辅音字母结尾的重读闭音节词,双写最后一个辅音字母ed,双写ed,study hurry,studied studied hurried hurried,去yied,注:以辅音字母加y结尾的词,去yied.,写出下列动词的过去式和过去分词:,be give see make put come write,was/were been gave given saw seen made made put put came come wrote written,注:不规则动词

11、见书上122页不规则动词表.,Some more examples:,1 borrow 2 hope 3 make 4 get 5 plan 6 cry,7 send 8 watch 9 say 10 grow 11 hit 12 enjoy,1 borrow 2 hope 3 make 4 get 5 plan 6 cry,borrowed hoped made got planned cried,sent watched said grew hit enjoyed,Step3: While task Task3: Finish Part A on page 14,1 They _ (fin

12、ish) their homework already. 2 John _never _ (visit) China. 3 Mr. Li _ (repair) over ten bicycles since Monday. 4 We_ _ (not see) each other for years. 5 My parents _ (not come) back yet. 6. Our teacher _ (teach) us a lot about the history of China.,have finished,has visited,has repaired,havent seen

13、,has taught,havent come,Step3: While task Task4: Finish Part B on page 14,Task 5: Finish Part C on page 15 M: _ you _ (see) any films recently, Sandy? S: No, I havent. What about you? M: Well, I _ (see) one last Saturday. S: What is it about? M: Its about the changes in Beijing over the past century

14、. From this film, I _ (learn) more about Beijings past and present. S: Oh, I think I _ (hear) about the film. Do you plan to see it again? M: Yes, Id like to.,Have,seen,saw,have heard,have learnt,1 She _ (wait) for two hours already. 2 They _(not finish) the project yet. 3 _ you _ (hear) from my sis

15、ter recently? 4 Mark _ (be) there for two days. 5 _ they ever _ (stay) at home alone? 6 I _ never _ (watch) this film . 7 Daniel _ just _ (arrive) home. 8 We _(not eat) anything since then.,has waited,havent finished,Have,heard,has been,Have,stayed,watched,have,has,arrived,havent eaten,Task6: Fill i

16、n the blanks,用括号中动词的适当形式填空 He (wait) for an hour. I (not finish) the work yet. you (know) him since then? I (hear) from my father recently. We (be) there many times in the past 3 years. They (finish)the work so far. 6. How long you (stay) at home ?,has waited,havent finished,Have,known,have heard,have been,have finished,have,stayed,Task7: Finish the exercises,Task 8: Translate these sentences,1 南京自1995年以来发生了很大的变化. 2 南京已经成为一个现代化的城市. 3你们在这个乡村住了多久了? 4他结婚了吗?是的,他们6年前结婚了了.,Nanjing has changed a lot since 1995.,Nanjing has turned into a modern city.,How long have you lived in the village?,Has he got