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1、大道教育现在完成时1.现在完成时的构成：现在完成时由助动词havehas+过去分词构成，第三人称单数用has，其余用have。IhavebeeninShenzhenforsevenyears.Lilyhasn’tbeentoAmericabefore.2.现在完成时的用法：1）现在完成时通常表示在说话之前已经完成的动作或存在的状态。说话人强调的是该动作或状态对现在的结果或影响。Mydaughterhasjustgoneout.我女儿刚出去。I’msurewe’vemetbefore.我肯定我们以前见过面。Shehasarrived.她到了。2）表示持续到现
2、在的动作或状态,for⋯,sinceyet⋯,等。如：Ihaven’theardfromherthesedays.这些日子我没有收到她的信。Wehaven’tseenyourecently.最近我们没有见到你。Theyhavebeenawayfortwoyears.他们离开已经两年了。ShehasbeenwithussinceMonday.3.常和现在完成时连用的时间状语：already,yet,before,lately,recently,once,twice,ever,never，since，for等连用。例如：Shehasalreadycome.她已经
3、来了。Ihaven’treadityet.我还没读过这个。TheyhaveneverbeentoYan他们从未去过延安。’an.Ihaven'tseenhimlately.我近来没看到他。Shehasbeenanindependentgirlsinceherfatherpassedaway.自从父亲去世后，这女孩就变得独立了。Jackhasbeenadoctorfor10years.杰克做医生已经10年了。4.现在完成时的否定式和疑问句。否定句：在havehas后加not结构：主语+hashave+not+过去分词+其他一般疑问句：HasHave提到主
4、语前，其他照写。结构：HaveHas+主语+过去分词+其他特殊疑问句：特殊疑问词+一般疑问句注意：肯定句中如有someand，在否定句或者一般疑问句中要变成anyor，即some-anyand-or大道教育以study为例，其否定式、疑问式和简单回答形式如下：肯定句否定句疑问句回答IhavestudiedGermanbefore.Ihavenot(havenstudiedGermanbefore.’t)HaveyoustudiedGermanbefore?Yes,Ihave.No,Ihaven’thavenot.HehasstudiedG
5、ermanbefore.Hehasnothasn’tstudiedGermanbefore.HashestudiedGermanbefore?Yes,hehas.No,hehasn’thavenot.5.部分不规则变化动词表BaseFormPastFormPastParticiplebearborebornbeatbeatbeatenbecomebecamebecomeblowblewblownbringbroughtbroughtbuildbuiltbuiltbuyboughtboughtcatchcaughtcaughtchoosecho
6、sechosencomecamecomedodiddonedrinkdrankdrunkdrivedrovedriveneatateeatenfallfellfallenfindfoundfoundflyflewflowngetgotgotgivegavegivengowentgonegrowgrewgrownhavehadhadhearheardheardkeepkeptkeptleaveleftleftloselostlostmakemademadeputputput大道教育readreadreadrunranrunsaysaidsaidseesawse
7、ensellsoldsoldsendsentsentsingsangsungsinksank/sunksunktaketooktakenteachtaughttaughtwritewrotewroteam,iswasbeenarewerebeen6.注意：1.since和for的区别since后接过去的某个时间点，如1993，lastterm,yesterday,thetimeIgottherefor后接一段时间，表示“长达多久”，如tenyears,awhile,twodays等。Exercise:用since和for填空1.JimhasbeeninIr
8、eland______Monday.2.Jillha
