八年级英语下册《Module3JourneytospaceUnit3》课件（新版）外研版.ppt

,Module3JourneytospaceUnit3Languageinuse,Haveyouheardsomenewsaboutspace?Whatarethey?,Languagepractice,Workinpairs,howmanyplanetthenameoftheplanetsrecently,whichonehasbeendegradedhowtotravelinspacedevelopmentinChinarecently,whichonehasbeendegradedthefutureofexplorationinspace,Workingroups,Example:A:Haveyoueverheardthatthereisaplanetdegradedrecently?B:No,Ihavent.C:DoesBknowwhichplanetisthelargestone?A:Yes,he/shehas.,Grammar,现在完成时(2),Grammar,现在完成时用在什么地方呢？,当我们要表达“某人曾经做过某事”,“某人已经做了某事”等意思时,英语要用“现在完成时”来表达。,否定句Ihavenotworked.He/Shehasnotworked.Theyhavenotworked.,肯定句Ihaveworked.He/Shehasworked.Theyhaveworked.,havent,hasnt,havent,现在完成时的结构：has/have+done(动词过去分词),现在完成时的肯定形式是：现在完成时的一般疑问句形式是：,She/He/It/或人物的单数形式,hasdonesth,I/We/You/They或人物的复数形式,havedonesth,现在完成时的一般疑问句形式是：,Hasdonesth?,she/he/it/或sb的单数形式,Havedonesth?,I/we/you/they/或sb的复数形式,我父母曾经坐船去大连旅游。她已经完成作业。我父母未曾坐船去过大连旅游。,MyparentshavetravelledtoDalianbyship.,Shehasdone(finished)herhomework.,MyparentshaventtravelledtoDalianbyship.,她还没有完成作业。你父母曾经坐船去大连旅游吗？她已经完成作业了吗？,HaveyourparentstravelledtoDalianbyship?,Hasshedone(finished)herhomework?,Shehasntdone(finished)herhomework.,要表达“刚刚做完某事”、“已经做完某事”时，我们同样可以用现在完成时。如:Ihavejustheardthenews.Astronautshavealreadybeentothemoon.可以看出，just用来表示“刚刚”，already用来表示“已经”，一般置于have/has之后，两者都用于肯定句，在否定句中则要用yet,表示“还（未）”。如：Thescientistshaventheardfromityet.,havebeento与havegoneto的区别,1.have(has)beento意为“曾经去过某地”，表示现在已经不在那里了。可与just,ever,never等连用。如：,Ivejustbeentothepostoffice.我刚才去邮局了。HaveyoueverbeentoHangzhou?你曾经去过杭州吗？MaryhasneverbeentotheGreatWall.玛丽从未去过长城。,have(has)beento后面可接次数，表示去过某地几次。IvebeentoBeijingthreetimes.我去过北京三次。Theyhavebeentothatvillageseveraltimes.他们已经去了那个村庄好几次了。,havebeento与havegoneto的区别,havebeento与havegoneto的区别,2.have(has)goneto意为“到某地去了”，表示到了某地或正在去某地的途中。总之，说话时该人不在现场，一般不用第一、第二人称代词作句子的主语。如：WhereisTom?汤姆在哪里？Hehasgonetothebookshop.他到书店去了。,与现在完成时连用的几个副词：肯定句:疑问句和否定句:yet常置于句末already,never,ever,just一般置于助动词have/has之后，过去分词之前。,already,just,ever,yet,never,already,just,ever,yet,never,A:Haveyou?B:Yes,/No,(usingalready,just,ever,yet,never),Individualactivity,Exercise,CheckAnswers,Manystudentslikewritinga_everyday.2.Mostofthechildrendontwanttotell_totheirparents.,从方框中选择适当的单词并用其正确形式完成句子。,evenrealsecrettwicediary,diary,secrets,3.HaveyoubeentoShanghai_?Yes,Ihave.4.ArethereanySpidermeninthe_world?5.Nowtheairinourhometownis_worsethanitwasbefore.Sowemustdosomethingtostopit.,twice,real,even,Peter,haveyoufinishedyourhomework?Yes,MissLin.Ive_finishedit.2.WhatareyougoingtodothisSunday?Ihaventdecided_.3.ShallItellSallyaboutit?No,youneednt.Ivetoldher_.,.用already，yet和just完成句子。,just,yet,already,4.Mr.Smithphonedyou_now.Heaskedyoutocallhimback.5.HaveyoureadthebookWhomovedmycheese?Yes,Ihave_readitseveraltimes.6.HaveyouvisitedMountainTai_?Yes,Iwenttherelastweek.,already,yet,just,1.WheresUncleBlack?Icantfindhim.He_(go)toSichuantohelppeopleinadisasterarea(灾区).2._youever_(eat)Beijingroastduck?Yes.Itsdelicious.3.Ihave_(notsee)WaterMargin(水浒).Really?I_(see)ityesterday.,III.用括号内所给动词的适当形式完成句子。,hasgone,Haveeaten,neverseen,saw,4.Howlong_you_(work)inthefactory?Forfiveweekstillnow.5.Shenzhen_(be)asmalltownfiftyyearsago.Nowit_(become)alargecity.6.They_(explore)thisdesertregion（地区）forfiveyears.7.Thechild_(name)afteritsfather.,haveworked,was,hasbecome,haveexplored,wasnamed,have,their,yet,homework,finished,they(?)2.my,I,yet,seen,havent,teacher(.)3.another,at,planet,to,have,look,started,just,we(.),VI.连词成句。,Havetheyfinishedtheirhomeworkyet?,Wehavejuststartedtolookatanotherplanet.,Ihaventseenmyteacheryet.,4.how,har