现在完成时公开课(1).ppt

Are you hungry now?Have you had breakfast?Yes, I have.I am not hungry now.No, I havent.I am very hungry now.Has your friend had breakfast?Yes, he/she has.He/she is not hungry now.No, he/she hasnt.He/she is very hungry now.Can Sarah use chopsticks?Has she learned howto use chopsticks?Yes, she has.She can use themnow.Who is Jerry and whois Tom?Have you seen thisMovie？Yes, I haveI know Jerry is themouse and Tom isthe cat.Has your friend seen this movie?Yes, he/she has.He/she knows Jerry is the mouse and Tom isthe cat.Who is the man?Have you seen this movie?No, I havent seen it.I know nothing about it.Has your friend seen this movie?No, she hasnt seen it. 现在完成时的现在完成时的用法用法 描述描述_发生或已经完成的某一动作发生或已经完成的某一动作 对对_的影响或结果。的影响或结果。 过去过去现在现在He has had breakfast before.He/she is not hungry now.I have had breakfast. I havent had breakfast.Have you had breakfast?Yes, I have. No, I havent.Has your friend seen this movie?Yes, she has seen it.No, she hasnt.肯定式：肯定式：主语主语+ have/has+过去分词过去分词(pp.)否定式：否定式：主语主语+have/has not+过去分词过去分词(pp.)疑问式：疑问式：Have/Has+主语主语+过去分词过去分词(pp.)1.现在完成时是怎样构成的？现在完成时是怎样构成的？什么情况下使用什么情况下使用has ?2. 什么情况下使用什么情况下使用has ?主语是第三人称单数时， 使用has.He has finished his homework.She has lived in Conghua for a long time.Eric has studied a little Chinese.My computer has stopped working.其他情况下使用haveI have seen this film.You have had breakfast.We have begun our class. They have made many new friends.3. 过去分词的构成过去分词的构成主语是第三人称单数时， 使用has.类型类型构成法构成法原形原形过去式过去式过去分过去分词词一般情况下，一般情况下，直接在词直接在词尾加尾加_,visit以不发音的以不发音的e结尾结尾 直接加直接加live以以“辅音字辅音字母母+y”结尾结尾把把y改成改成_, 再加再加_, studiedcry一个元音一个元音+一一个辅音个辅音,先双写先双写_ , 再加再加_stoppeddroppededvisited visited dlivedlivediedstudystudiedcriedcried辅音辅音stopstoppeddropeddropped过去分词的过去分词的规则变化规则变化（与过去式基本相同）（与过去式基本相同）不规则变化见不规则变化见“Book A P141-142”巩固练习：请写出以下动词的过去式和过去分词look see invite do make open worryput looked lookedinvited inviteddid donesaw seenmade madeopened openedworried worriedput putI, visit, the Great WallI have visited the Great Wall.I have not visited the Great Wall.否定句否定句疑问句疑问句 Have you visited the Great Wall?Yes, I have. No, I havent.We have travelled by plane. we, travel by plane否定句否定句:一般疑问句一般疑问句:We have not travelled by plane.Have you travelled by plane?肯定肯定/否定回答：否定回答： Yes, we have. /No, we havent.否定句否定句:一般疑问句一般疑问句:肯定肯定/否定回答：否定回答：finish her homeworkShe has finished her homework.She hasnt finished her homework.Has she finished her homework.Yes, she has. /No, she hasnt.否定句否定句:一般疑问句一般疑问句:肯定肯定/否定回答：否定回答：play basketballThey have played basketball.Have they played basketball?They havent played basketball.Yes, they have. No, they havent.Complete the sentences1. He _ already_ the exam. ( pass)2. They _ already _ some trees. (plant)3. It _ already _. ( rain)4. We _ already _ the broken doors. ( fix)5. I _ _ some furniture. ( buy)6. We _ already _ the kitchen. ( clean)7. John _ _ the yard. ( sweep)8. Students _ _ knowledge from the experience? ( learn)has passed have planted has rained have fixed have boughthave cleaned has swept have learnt Fengyun MountainCanton towerConghua hot springDisneylandS1: Have you visited /been to?S2: Yes, I have./ No, I havent.S3: Which place has your friend visited?S4: She/ He has visited She/ He has been to 现在完成时的现在完成时的用法用法 表示表示过去过去发生或已经完成的某一动作发生或已经完成的某一动作 对对现在现在的影响或结果。的影响或结果。 1)他去过北京。他去过北京。(他现在了解北京他现在了解北京) He has been to Beijing.2)我已经开了门。我已经开了门。 (门是开着的门是开着的) I have already opened the door. 常与常与already(已经已经)、yet(还没有还没有)、 ever(曾经曾经)、never(从不从不)等时间等时间状语连用。状语连用。 already（已经）（已经） （用于（用于肯定句肯定句，可放在，可放在句中句中或或句末句末。）。）I have already opened the door.I have opened the door already. yet（仍然，还没有）（仍然，还没有）（用于（用于否定句否定句或或一般疑问句一般疑问句，放，放句末句末。)They havent finished their homework yet.Have you finished your homework yet? ever （曾经）（曾经）Have you ever visited that school? never（从不）（从不）I have never read that book.they, alreadyThey have already danced.dancehe, alreadyHe has already sung this song.sing this songshe, not, yetShe has not cleaned the floor yet.clean the floorhe, not, yetHe has not finished the picture yet.finish the picturethey, not, yetThey have not swum yet.swimshe, neverShe has never learnt English.learn Englishhe, neverHe has never changed a light bulb.change a light bulbhe, ever? yesHas he ever played basketball?Yes, he has.play basketballshe, ever? yescookHas she ever cooked?Yes, she has.they, ever? notake part in the sports meetingHave they ever taken part in the sports meeting?No, they havent.she, yet? nofinish her homeworkHave she finished her homework yet?No, she hasnt.单项选择单项选择1.Have you locked the door_?A. already B. yet C. ever D. never2.Hes never _ the film.A.see B.saw C.seeing D.seen3. _ you ever _ this pen? It is useful. A. Has, use B. Have, used C. Have, use D. Did, use5. Li Lei hasnt got up _. A. already B. ever C. yet D. just6. We _ a junior high school students . A. have became B. have become C. has become D. became7.Zhao Lan _already _in this school for two years . . was ; studying . will ; study . has ; studied . are ; studying 8.The famous writer _ already _ one new book. . is writing .was writing . didwrote .has written 现在完成时现在完成时基本基本句式句式用法用法标志词标志词never 从不，用从不，用于肯定句在剧中于肯定句在剧中already已经已经用于肯定句，用于肯定句，放在句中或句末放在句中或句末肯定句：主语肯定句：主语+have/has+P.P+否定句：主语否定句：主语+have/has+not+P.P+一般疑问句：一般疑问句：Have/Has+主语主语+P.P+ 表示发生在过去表示发生在过去的动作对现在的动作对现在造成的影响造成的影响 ever 曾经，用于疑曾经，用于疑问句，放在句中问句，放在句中 yet（还没有）用于（还没有）用于否定句或疑问句中，放否定句或疑问句中，放在句末在句末1.完成完成Book B 47-49页页Homework