会计学Unit1I'vealsoenteredlotsofspeakingcompetitions.Haveyoueverenteredacompetition?Haveyouevertravelledbyplane?HaveyouevervisitedBeijing?Haveyoueverseenafilm?现在完成时肯定句构成：主语+have/has+过去分词.否定句构成：主语+have/has+not+过去分词.一般疑问句：Have/Has+主语+过去分词？回答：Yes,主语have./No,主语haven’t.Yes,主语has./No,主语hasn’t.[注意]在变一般疑问句时：把陈述句中的have或has放到句首,句末用问号,同时把句中的some,already改为any,yet就构成了一般疑问句。肯定回答用“Yes,主语+have/has.”；否定回答用“No,主语+haven’t/hasn’t.”，也可以用"No,notyet./No,never."等。3.过去分词的构成:(2)不规则动词不规则动词的过去分词形式需要特殊记忆,如：see—seen,be—been,take—taken看课本104页1.visit--_______2.ask--______3.travel--_______4.enter--_______5.help--_______6.win--_____7.want--_______8.stop--_______9.think--_______10.hope--______11.invite--_______12.call--_______ever1.Linglinghasvisited/hasn’tevervisitedtheUS.2.Bettyhasasked/hasn’taskedherparents.3.Linglinghastravelled/hasn’ttravelledbyplane.1.Haveyoueverwonanyprizesbefore?2.I’vealwayswantedtogoonadreamholiday.3.I’vealsoenteredlotsofspeakingcompetitions,buthaven’twonanyprizes.4.I’vestoppedtryingnow.5.Haveyoueverthoughtaboutotherkindsofcompetitions?6.Towinit,youneedtowriteashortstoryaboutaplaceyou'vevisited.6.ButIhaven’ttravelledmuch.NameHer_______wastostudyatagooduniversityoneday.2.WhenIwasinschool,Iwonmany______formywriting.3.Youmustenterthemusic___________!Youwillbeateverybody.4.Myfamilycannot______tobuyaticketforthematch.5.Itisa(n)_____thatyoudidnotcometoseethefilmwithus.6.John________hisnewfriendstohisbirthdaypartylastweek.1.Iamenteringacompetition.我正参加一个比赛。=takepartin2.ButIcan’taffordit.但是我付不起。afford+sth能付得起afford+todosth有能力做某事e.g.Ican’taffordthetime.我花不起这个时间。Icanaffordtobuythishouse.我能买得起这个房子。3.I’vestoppedtryingnow.我已经不再尝试了。stopdoingsth.“停止正在做的事情”stoptodosth.“停下正在做的事去做另件事”e.g.Thetwogirlsstoppedtalkingwhentheysawme.那两个女孩一见到我就停止了讲话。Thetwogirlsstoppedtotalktomewhentheysawme.那两个女孩一见到我就停下来和我讲话。1.Shereachedthetopofthehillandstopped___onabigrock.4.That’sapity.很遗憾!pity表示“遗憾，可惜”。=It’sapity.=Whatapity!6.Iwillinviteyoutocomewit