会计学Let'scheck!!!PK!1.ThisisthefirsttimeIhave______(be)inAustralia.2.Mybrother__________(write)aletteratthemoment.3.Tom_____(do)hishomeworkjustnow,butnowhe___________(finish)already.4.Mayoften______(go)shoppingonFriday,butshe______(stay)athomelastFriday.5.Listen,someone___________(knock)atthedoor.Translatesomesentences!1.现在完成时的构成2.现在完成时的用法Soifyouseecrashes,whatwillyoudo?Whyaretherecrashes?Maybe...Remembersomethings！！！Ifyouhadacarcrash，whatwillyoudowiththecar？attendant(bring-brought-brought)bringsth.tosb.=bringsb.sth.她给我带来了一个好消息。bring&taketry:n./v.设法，努力trytodosth.努力，企图做某事。trydoingsth.试验，试着做某事(不一定成功)trytodo表示“非常努力地试图做某事”，而trydoing表示“只是试试做某事”，主观尝试的努力不及trytodo。tryon…试穿……Pleasetryonthiscoat.请试穿一下这件大衣。tryone'sbesttodosth.尽某人自己最大的努力去做某事。Letmetry.让我试试。haveatry试一试１.What'sthenumberofMr.Wood'scar?It'sLFZ312G.2.Whendidhebrightittothegarage?Hebroghtittherethreedaysago.3.Howdidhehaveacrash?Hedroveitintothelamp-post.4.CanthemechanicsrepairMr.Wood’scar?No,theycan't.Whendidyoubringittous?您什么时候送来的？Ibroughtitherethreedaysago.我3天前送来的。Mr.Wood:Haveyourmechanicsfinishedyet?Attendant:No,they’restillworkingonit.Let’sgointothegarageandhavealookatit.Attendant:Isn’tthatyourcar?Mr.Wood:Well,itwasmycar.仿照书上例句造句：1、你已经完成了你的作业了吗？没有，我仍然在做呢。2、他已经吃完午饭了吗？没有，他还在吃呢。Isn’tthatyourcar?这难道不是您的车吗？否定疑问句，希望得到肯定回答。2.have译为“进行，从事”时，和名词或名词短语构成短语。它的疑问和否定形式只能由助动词引导。可以代替常用动词如：eat，enjoy，drink,take等e.g.洗澡haveabath喝酒haveadrink度假haveaholiday看一下havealook抽支烟haveacigarette试一下haveatry休息一下haveabreak谈一谈haveatalkDidn’tyouhaveacrash?难道您没有出车祸吗？Well,they’retryingtorepairit,sir.啊，他们正设法修呢。Idroveitintoalamp-post,我把汽车撞在电线杆上了。Grammar动词原形过去式过去分词Lesson88Haveyou...yet?HasLucymadethebedyet?Yes,shehas.LookattheformsonyourbookPage179.Lesson87Acarcrash!Canyousaysth.aboutthepicture?ourmechanics,still,tryto...repair,it.but,you,need,anewcar,afraid.Homework：