初中八年级英语课件Grammar Present perfect tense

Grammar:Presentperfecttense_____youever______somebodysomuchItmakesyoucry_____youever______somethingsobadYoucan'tsleepatnight_____youever______tofindthewordsButtheydon'tcomeoutrightHaveyouever,haveyoueverHavelovedHaveneededHavetriedHaveyoueverlovedsomebody?Haveyoueverneededyourfriend'shelp?Haveyouevertriedtostudyhard?听歌填歌词warmup1.Weusethepresentperfecttensetotalkaboutanactionthatstartedinthepastandcontinuestothepresent.1)IhavelivedheresinceIwasborn.2)HehaslivedheresincehecametoNanjing.现在完成时定义(从过去开始一直持续到现在的动作).2.Weusethepresentperfecttensetotalkaboutanactionthathappenedinthepastandhasaconnectionwiththepresent.1)Eddie

has

justeaten

Hobo’sfood.(Eddieatethefood,andnowHobohasnothingtoeat.)2)Ihavelostmymobilephone.(Ilostmymobilephone,andnowIhavenomobilephonetouse.)(发生在过去并和现在有联系的动作)3.Wealsousethepresentperfecttensetotalkabouthowmanytimesanactionhashappenedtillnow.(到现在为止动作发生了多少次)Ihavealreadyreadthisbookmanytimes.1.现在完成时的肯定句

主语+have/has+done+…e.g.Ihave

finishedmyhomework.Hehaswrittensixpoems.现在完成时的结构2.现在完成时的否定句hasn’t=hasnothaven’t=havenot主语+have/has+not+done+…e.g.Ihavenotseenthemovieyet.Hehasn’tcomehereyet.3.现在完成时的一般疑问句

Have/Has+主语+done+……?Yes,主语+have/has.No,主语+have/hasnot.

e.g.1)Ihavefinishedthework.(改成一般疑问句并回答)4.现在完成时的特殊疑问句特殊疑问词+have/has+主语+done+……？e.g.IhavelivedheresinceIcamehere.（划线提问）__________________you______here?Howlonghavelived______she________here?Yes,she_____./No,she_______.______you_______thework?HavefinishedYes,I______./No,I_______.

havehaven’t2)Shehasarrivedhere.(改成一般疑问句并回答)

Has

arrivedhas

hasn’t规则动词的过去分词的构成大多数的动词的过去分词是规则的，只需在动词后加-ed；

work→workedlisten→listenedjump→jumped2.在以-e结尾的动词后只加-d；

close→closedlike→likedagree→agreed3.在以辅音字母加y结尾的动词，应将y改为i再加ed；

study→studiedcarry→carriedtry→triedworry→worried4.以重读闭音节结尾的动词，要双写末尾的辅音字母再加-ed；

stop→stoppeddrop→dropped

动词的过去分词不规则动词的过去分词的构成有些动词的原形和过去分词相同；

put→puthurt→hurtbecome→becomerun→run2.改变单词中间元音字母；

sit→satwin→wonhold→held3.把单词结尾的字母d改为t；

lend→lentspend→spentsend→sent4.以eep结尾的动词，把eep改为ept；

keep→keptsleep→slept5.过去分词以aught或ought结尾；

teach→taughtcatch→caughtbuy→bought6.以ay结尾的动词,把ay变成aid;7.在原形词尾加n或en；还有些动词的过去分词是不规则的，需要特殊记忆。say→saidpay→paidgive→giveneat→eaten现在完成时常用的标志词1.already与yetalready“已经”(用于肯定句中，常放于行为动词之前，其他动词之后)yet用于否定句中“还”用于疑问句中“已经，还，仍然”yet是already的否定词(放于句末)I_____already____

thefilm.(我已看过这部电影了)haveseen否：I______________thefilm______.haven’tseenyet疑：________you______thefilm______?HaveseenyetNo,not_____.“还”“已经”yet2.ever与neverever曾经主要用于疑问句(放句中)never从不主要用于否定句(放句中)--____youever_____(eat)BeijingDuck?--No,______.Haveeatennever3.just与recently1)I______just_______(see)him.haveseen2)She_______________(notsee)themrecently.2)She’sneverseenthefilm,________?hasshehasn’tseen4.since和for+一段时间常用现在完成时since+短语=for+一段时间句子(用一般过去时)for+一段时间1)常用现在完成时2)动词必须可以延续3)用Howlong提问1)I______(begin)toworkherein2000began=I_____________heresince2000.haveworked2)They__________(notmeet)eachotherforyears.haven’tmet3)She_______(feel)lonelysinceshe______(move)here.hasfeltmoved5.次数(twice/threetimes/….)和before(以前)单独放句末常用现在完成时1)He_________(see)thefilmtwice.hasseen___________________heseenthefilm?Howmanytimeshas2)______you______(be)toBeijingBefore?Havebeen6.overthe(past/last)years在(过去的)这几年间e.g.Greatchanges__________(take)placeoverthepasttenyears.havetaken7.sofar,uptonow,until/tillnow到目前为止e.g.We____________(learn)manyEnglishsongssofar.havelearnedMyfriendJackhascometoYangzhou.Whathashedoneinthelast2days?HehaseatensomethingdeliciousinFuChunTeaHouse.haseaten （eat）HehastakensomephotosinSlenderWestLake.hastaken

（take）

HehasseendifferentkindsofanimalsinZhuYuwanPark.hasseen（see）HehasboughtsomepresentsforhisfriendsinDongGuanstreet.hasbought

（buy）HehasclimbedQiLingTowerinDaMingTemple.hasclimbed

（climb）CanyourememberalltheactivitiesJackhasdoneinYangzhou？Let’scheckyourmemory.PlayagameHashetakensomephotos

inSlenderWestLake?

Yes,hehas.Hasheg