《牛津8B Unit1 Past and Present Grammar(A)课件》由会员分享，可在线阅读，更多相关《牛津8B Unit1 Past and Present Grammar(A)课件（21页珍藏版）》请在金锄头文库上搜索。
1、8B Unit 1 Past and PresentGrammar (A)Learning aims 1.To know the present perfect tense. 2.To master the structure of the PPT. 3.To learn the differences between the simple past tense and the present perfect tense. 1 Questions about Reading: (1) How long has Mr. Chen lived in Sunshine Town? (2) When
2、did Mr. Chen get married? (3) There have been many changes in this town. What has the centre of town become?(4) How does Mr. Chen feel from time to time?He has lived in Sunshine Town since he moved there withhis family when he was two years old.In 1965It has become a park.He feels a bit lonely.Some
3、more questions: (1) How long have you lived in this town? (2) How long have you studied in this school? (3) How long have you studied English? (4) What have studied these days? (5) Where have you been recently?The Present Perfect Tense现在完成时态The Present Perfect TenseThe Present Perfect TenseWe use th
4、e simple past tense to talk about what happened at a definite time in the past.Past presentEddie was born four years ago.We use the present perfect tense to talk about things that started in the past and still have some connection with the present.Eddie has lived with Millie since he was born.Eddie
5、has lived with Millie for four years.presentPastPastpresent4 years一、现在完成时的构成1. 现在完成时的肯定句句型 主语（第一、二人称单、复数）+have 主语（第三人称复数） +have +过去分词主语（第三人称单数） +has We have lived in Beijing.He has lived in Beijing.I have finished my homework.2. 现在完成时的否定句 句型 主语+have/has+not+过去分词+E.g. 1) I have not seen the movie yet
6、.2)He hasnt been to Beijing since then.I / They/ We / Youhave (not) move d.He / She / It has (not)has not = hasnt have not= havent 过去分词的构成上一页下一页Typeoriginal p.t p.pcostcostcostreadreadreadmeetmetmetcatchcaughtcaughtrideroderiddenspeakspokespokenkeepkeptkeptdrinkdrankdrunkeatateeatenABBAAAABCSome mor
7、e examples:most verbs Irregular verbsInfinitive Past particle Infinitive Past particle visitvisitedcomecome livelivedseeseen repairrepairedbebeen finishfinishedgivegiven movemovedwritewritten watchwatchedmakemade traveltravelledputputMaking sentences Mr.Wu asks the students to complete the sentences
8、 below using the present perfect tense. Help them complete the sentences. 1. They_(finish) their homework. 2. Mr. And Mrs.Li _(not come) back yet. 3. John_ (play) this computer game a few times. 4. We _ (not see)that film yet 5. Mr Dong _ (repair) over ten bicycle since last Monday. 6. You _ (not vi
9、sit)me for a long time.have finished havent come has playedhave not seen have not repairedhave not visitedCheck the answers:3. 现在完成时的一般疑问句 句型 Have/Has+主语+过去分词 +. Have you finished the work? Has she arrived here? 4. 现在完成时的特殊疑问句 句型 特殊疑问词+have/has+主语+ 过去分词+. How many times have you been to the Great Wa
10、ll?Chat time Millie and Sandy are talking about an exhibition of the history of Beijing. Complete their conversation. Use the correct forms of the verbs in the brackets. M : _ you _ (see)any exhibition recently, Sandy? S : No, I _.What about you? M : Yes, I _ (see) one. I saw it at the history museu
11、m last week. S : What is it about? M : I _ (forget) the title.Its about changes in Beijing over the past century.Haveseenhavent have seenhave forgottenS: Oh, yes. I _ (hear) about it._ your cousin _ (go) with you? M : No, he _.He _ (be) very busy this week. S : Did you enjoy the exhibition? M : Yes,
12、 I did.I _ (learn)a lot about Beijings past and present. Its a good exhibition and I _ (decide) to see it again. Do you want to go with me? S : Sure. I wont miss it this time.have heard goDidhas beenlearnthave decidedidntAct the dialogue out.用括号中动词的适当形式填空 1. He (wait) for an hour. 2. I (not finish)
13、the work yet. 3. you (know) him since then? 4. I (hear) from my father recently. 5. We (be) there many times in the past 3 years. 6. The dog (die) since 3 days ago. 7. They (finish)the work so far. 8. How long you (stay) at home already?has waited havent finished Haveknown have heardhave beenhas been dead have finishedhavestayedPractice:9. I (not read) the book before. 10. He just (do) it. 11. My sister (walk) to school every day last year. 12. We (have) an exam again sometime next week. 13. By 2000, we (plant) 2000 trees. 14. Lucy (go) to Shanghai. She (leave) this morning. 15. Tom
