牛津译林8下Unit1Grammar课件（共23张PPT）

1、The Present Perfect Tense现在完成时现在完成时8下Unit 1 Grammar1. How long has Mr. Chen lived in Sunshine Town?2. Can Mr. Chen see his old friends as often as before?He has lived here since he was born.No. Because most of his old friends have moved away.Lead-in Ask and answer have/has + done(动词过去分词) past presen

2、t Eddie was born four years ago.我们用一般过去时谈论在过去某一时间里我们用一般过去时谈论在过去某一时间里所发生的动作或存在的状态所发生的动作或存在的状态.Step 1:现在完成时用法现在完成时用法four years ago我们用现在完成时表示从过去持续到现在的我们用现在完成时表示从过去持续到现在的动作或状态。动作或状态。 presentpastpastpresent4 years Eddie has lived with Millie since he was born.Eddie has lived with Millie for four years.我们

3、用现在完成时表示已完成但对现在有一定我们用现在完成时表示已完成但对现在有一定影响的动作影响的动作。presentpastToday, Hobo said to Millie.Eddie has eaten my food. (Eddie ate the food and now Hobo has nothing to eat.）我们用现在完成时谈论到现在为止一个动作已经我们用现在完成时谈论到现在为止一个动作已经发生了多少次发生了多少次。pastpresentEddie 吃了很多次吃了很多次Hobo 的食物。的食物。Eddie has eaten Hobos food many times. W

4、e _ (live)in Xuyi since we were born. for 14 years. have livedStep 2:现在完成时的构成现在完成时的构成 We _(study) here since 2014. for 2 years. have studiedThe Present Perfect Tense (现在完成时态现在完成时态)基本结构基本结构:助动词助动词have/has +动词的动词的过去分词过去分词I have watched the TV show many times. Have you watched the TV show many times? Y

5、es, I have.No, I havent. He/She hasnt watched the TV show many times. 一般疑问句一般疑问句否定句否定句The Present Perfect Tense (现在完成时现在完成时)一般疑问式一般疑问式: 将将 have/has提前到句首提前到句首 回答回答:肯定：肯定：否定：否定：Yes, have/has.No, havent/hasnt.The Present Perfect Tense (现在完成时现在完成时) 否定式否定式: have/has not +动词的动词的过去分词过去分词 havent /hasntTask

6、one (仿照例句看表格造句）仿照例句看表格造句）Whohave donehavent doneWeclean the roomclean the windowsee a film make dinnerTheyShefly to Beijingvisit the Great WallMy father1. We _ the room but we _ the window.2. _ you _ the room? Yes, _. _ you _ the window? No, _.have cleanedhavent cleanedHave cleanedwe haveHave we hav

7、entcleanedbuy foodwatch Beijing Operamovelivelovelike动词的过去式和过去分词的构成动词的过去式和过去分词的构成:visitrepairwatchfinishvisited visited repaired repairedwatched watchedfinished finishedmoved moved lived lived loved loved liked liked verbed以不发音的以不发音的e结尾结尾dStep 3:过去分词的构成过去分词的构成stopmoptrapplanstopped stopped mopped mo

8、ppedtrapped trappedplanned planned注注:以一个辅音字母结尾的重读闭音节词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双写最后一个辅音字母ed双写双写edstudy hurrystudied studiedhurried hurried去去yied注注:以辅音字母加以辅音字母加y结尾的词结尾的词,去去yied.动词的过去式和过去分词的构成动词的过去式和过去分词的构成:过去分词的构成过去分词的构成 Typeoriginal p.t p.pcostcostcostcomecamecomerunranrungetgotgotcatchcaughtcaught

9、seesawseenforgetforgotforgottendrinkdrankdrunkgrowgrewgrowneatateeatenABBAAA ABCABA不规则变化不规则变化p0donatecatcheatseekeephavecomestopliveam/isbuildputTask one:Play a game（说出所给动词的过去分词）（说出所给动词的过去分词）1 borrow2 hope3 make4 get5 plan6 cry7 send8 watch9 say10 grow11 hit12 enjoy1 borrow2 hope3 make4 get5 plan6 c

10、ryborrowedhopedmadegotplannedcriedsentwatchedsaidgrownhit enjoyedTask two: Finish Part A on page 141 They _ (finish) 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

11、teacher _ (teach) us a lot about the history of China.have finished has visitedhas repairedhavent seenhas taughthavent come Finish Part B on page 14.Task two:I have watched the TV show already. Have you watched the TVshow yet? Yes, I have.No, I havent.I havent watched the TVshow yet. already一般用于一般用于

12、肯定句肯定句中，中，yet一般用于一般用于否定句否定句和和 疑问句疑问句中中I have _ watched the TV show. 还，仍还，仍Have you watched any interesting TV shows recently? (近来，最近近来，最近) Step 4:常用的时间状语用法常用的时间状语用法alreadyTask one: 用用already或或yet填填空空1. He has _ visited many places in China. 2. Lily has had breakfast _. 3. Has she arrived _? 4. Have

13、they come _? 5. The train hasnt arrived _.alreadyalreadyyet yet yet注意注意 already 在句中的两种位置在句中的两种位置.1.Have you_ seen the film?No. I have _seen it.2. Has the bus left _? Yes. It has left_. No. It hasnt left_. everneveryetalreadyyet选择选择already, yet, never, ever填空。填空。 Task two（1 1）already “already “已经已经”，

14、放在肯定句句中或句末；，放在肯定句句中或句末；（2 2）yetyet放在疑问句句尾时，表示放在疑问句句尾时，表示“已经已经”； 放在否定句句尾时，表示放在否定句句尾时，表示“还还( (没，不没，不)”)”常用的时间状语区别常用的时间状语区别（3 3）ever ever “曾经曾经”，用于疑问句或否定句中；，用于疑问句或否定句中；（4 4）never never “从来没有从来没有”，表示否定句中。，表示否定句中。（5 5）justjust “ “刚刚刚刚”，用于陈述句中；，用于陈述句中；（6 6）recently recently “近近来来”，用于句末。，用于句末。Chat time (Exercise C)M : _ you _ (see)any films recently, Sandy?S : No, I _.What about you?M : I _ (see) one last Saturday. S : Whats it about?M : Its about the chang