號(hào)黃花桂高中英語-精講版課件

1、 Present Perfect Tense 永州三中 黃花桂 高中英語 Lead-inLook at the following sentences and try to explain why the tense is used in these sentences.1. We have studied English for about five years.2. They have lived there since 1990.3. She hasnt finished her homework yet.4. Eric has just come back.5. How long ha

2、ve you been here?1.The form of the Present perfect tense:構(gòu)成：have (has) +過去分詞Justin has disappeared, so Kelly is very sad.表示過去發(fā)生的事對(duì)現(xiàn)在仍有影響Note:2. 通常使用現(xiàn)在完成時(shí)的幾種情況:I have not seen Justin since last Friday night.表示過去開始的動(dòng)作一直延續(xù)到現(xiàn)在。Note :The boy has already come home. I havent heard anything from him yet.We

3、havent seen him for two days.We havent seen him since last Monday.Note:表示動(dòng)作的確切時(shí)間不明確或不重要。常和完成時(shí)連用的詞:already ever for just lately never recently since yet already-肯定句 yet 否定句 for + 一段時(shí)間, since + 時(shí)間點(diǎn). Note:表示剛結(jié)束的動(dòng)作。The police have just finished searching the area.I have just heard the news. (= Now I kno

4、w the news.)Note:表示反復(fù)發(fā)生的動(dòng)作。Some villagers say that they have seen UFOsmany times.Look at the sentences and find the difference:Tom has rung up three times this morning.Now it is still in the morning.Tom rang up three times this morning.Now it is not still in the morning.現(xiàn)在完成時(shí)和一般過去式的區(qū)別：1. We have stu

5、died English for about five years. We began to study it five years ago.2. They moved to the south in 1990 and have lived there since then.3. Eric left home last year and has just come back.4. They bought this house three years ago and they have lived here since then.5. My brother went to see my gran

6、dpa last week. He has visited him three times this month.1 _ you _ my pen? Yes, I_ it on your desk just now. (see)2 _ you _ dinner? Yes, I _ it with Mary. (have)3 _the postman_ yet this morning? _ the postman_ this morning? (come)HaveHavehadDidHaveComplete the sentencesseencomecomehadsawe.g.Bill has

7、 smoked since he left school.He still smokes.Look at the sentences:Sorry. Have you been waiting long?I have been waiting for an hour.PastOne hour agoPresentwaitingarriveThe form of the Present perfect continuous tense：構(gòu)成：have (has) +been + doing現(xiàn)在完成進(jìn)行時(shí)的使用情況:表示過去開始的動(dòng)作一直延續(xù)到現(xiàn)在并仍在繼續(xù)之中。表示過去開始的動(dòng)作剛結(jié)束并在某種情況

8、下與現(xiàn)在有關(guān)聯(lián)。Present perfect or present perfect continuous tense?She is still reading the book.Li Jia has been reading a book about Stonehenge.Li Jia has read a book about Stonehenge.She finished reading the book. She knows the content of the book now.Note:現(xiàn)在完成時(shí)表示事件或動(dòng)作剛結(jié)束。現(xiàn)在完成進(jìn)行時(shí)強(qiáng)調(diào)動(dòng)作仍在繼續(xù)。I have visited E

9、gypt twice this month.I have been touring Egypt for two months.How many times have you swum in the lake?How long have you been swimming in the lake?A state verb or an action verb?1. I have had this camera for five years. 2. I have taken photos of UFOs with this camera. 3. I have been taking photos o

10、f UFOs with this camera. state verbaction verbaction verbAn action means something happening or changing. A state means something staying the same. Some examples of action verbs are do, go, and play. Some examples of state verbs are like, know and exist.Note:現(xiàn)在完成時(shí)可以用表示狀態(tài)的動(dòng)詞或表示動(dòng)作的動(dòng)詞做謂語?，F(xiàn)在完成進(jìn)行時(shí)只能用表示動(dòng)作

11、的動(dòng)詞作謂語。e.g.Theyve always had a big garden.How long have you known each other?Hes been in hospital since his accident.Ive already been to Paris.Ive never visited Paris.Note:We use the present perfect tense, not the present perfect continuous tense, with the words like always, never, yet, already and

12、ever.How long have you been learning English?How long have you learnt English?It has been raining for a long time.It has rained for a long time.Note: An action which began in the past and is still continuing or has only just finished can, with certain verbs, be expressed by either the present perfec

13、t or present perfect continuous . Verbs which can be used in this way include expect, hope, learn, lie, live, sleep, sit, study, wait, want, snow, etc. 1. _ that dress when I first saw you at the station? A. Were you wearing B. Have you worn C. Did you wear D. Do you wearExercises2. Kate doesnt look

14、 very well. Whats wrong with her? She has a headache because she _ too long, she ought to stop work. A. has been reading B. had read C. is reading D. was reading3. “Tell the students to stop shouting. We _ our essays .” A. write B. have been writing C. are writing D. have written4. My uncle, Sam, _

15、manager of the firm. A. has just made B. is just being made C. has just been made D. is just made5. This is the first time the students _ to Hyde Park. A. have gone B. have been gone C. have been going D. are being gone6. She _ her mothers work since she was admitted into hospital. A. is doing B. ha

16、s been doing C. has done D. has been done7. It _ every day so much this month. A. is raining B. rains C. has rained D. has been rained【考例1】 _ you _ him around the museum yet?Yes. We had a great time there. A. Have；shown B. Do；show C. Had；shown D. Did；show點(diǎn)撥 此句強(qiáng)調(diào)過去發(fā)生的動(dòng)作對(duì)現(xiàn)在的影響, 即：是否已經(jīng)帶他參觀了博物館?！究祭? 】We

17、 _ our new neighbors yet, so we dont know their names.A. dont meet B. wont meetC. havent metD. hadnt met點(diǎn)撥 此句表示發(fā)生在過去的動(dòng)作對(duì)現(xiàn)在造成的影響。【考例3 】 I have got a headache.No wonder. You _ in front of that computer too long. A. work B. are working C. have been working D. worked點(diǎn)撥 由語境可以看出work動(dòng)作開始于過去，持續(xù)到現(xiàn)在，對(duì)現(xiàn)在還有影響，且含有責(zé)備的口吻，所以用現(xiàn)在完成進(jìn)行時(shí)。【考例4 】 Cathy is taking notes of the