Module3JourneytospaceUnit3LanguageinuseHaveyouheardsomenewsaboutspace?Whatarethey?LanguagepracticeWorkinpairs•howmanyplanet•thenameoftheplanets•recently,whichonehasbeendegraded•howtotravelinspace•developmentinChina•recently,whichonehasbeendegraded•thefutureofexplorationinspaceWorkingroups•Example:•A:Haveyoueverheardthatthereisaplanetdegradedrecently?•B:No,Ihaven’t.•C:DoesBknowwhichplanetisthelargestone?•A:Yes,he/shehas.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.haven’thasn’thaven’t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hasdonesthI/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.Myparentshaven’ttravelledtoDalianbyship.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?Shehasn’tdone(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：Thescientistshaven’theardfromityet.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：I’vejustbeentothepostoffice.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。I’vebeentoBeijingthreetimes.我去过北京三次。Theyhavebeen...
