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bee選C。D.C.B.17.So far Tom with Mary _______ 50 left behind children to do their homework after school.A.故D選項(xiàng)正確。has worked【答案】D 【解析】【分析】句意:邁克在這里工作已經(jīng)4年了。C.was working A.【點(diǎn)評】考查動詞時(shí)態(tài),一般過去時(shí)表示過去某個(gè)時(shí)間發(fā)生的動作;現(xiàn)在完成時(shí)表示過去的動作對現(xiàn)在造成的結(jié)果或影響。 has happened【答案】D 【解析】【分析】句意:剛才你發(fā)生了什么事?別擔(dān)心,沒什么事發(fā)生。D. has happened happenedC.B.has happens to?!狣on39。注意掌握現(xiàn)在完成時(shí)的結(jié)構(gòu)have/has+過去分詞。根據(jù)時(shí)間狀語 in recent years,近幾年,可知動作從過去持續(xù)到現(xiàn)在,時(shí)態(tài)為現(xiàn)在完成時(shí)have/has+過去分詞,故選B。D.makesB.is making【點(diǎn)評】考查動詞的時(shí)態(tài),注意理解句意,根據(jù)時(shí)態(tài)的定義判斷。我進(jìn)來的時(shí)候看見在桌子上。 seeD. saw have seenC.B. have seent find it anywhere.—I _______ it on the desk when I came in.A.for+段時(shí)間,通常用于現(xiàn)在完成時(shí)態(tài),結(jié)構(gòu)是have/has+動詞的過去分詞,begin和end都是短暫性動詞,不能用于現(xiàn)在完成時(shí)態(tài)中表示動作或狀態(tài)的延續(xù),因此A,B不正確.has been on在進(jìn)行,開著(的狀態(tài)),故選C【點(diǎn)評】現(xiàn)在完成時(shí)表示延續(xù)性的狀態(tài)。has been on【答案】 C 【解析】【分析】句意:——對不起,我遲到了。B.has begun【點(diǎn)評】考查現(xiàn)在完成時(shí)12.—I39?,F(xiàn)在完成時(shí)的結(jié)構(gòu):主語+have/ has +過去分詞。hadn39。stayst stayedB.t seen your grandfather for two years. What happened to him?—Oh, he ________ here for two years.A.have been 是指去過某地切已經(jīng)回來了,have gone 是指去了某地還沒有回來,根據(jù)答句Three ,故選 A。had;gone【答案】 A 【解析】【分析】句意是:——你今年去過北京幾次?——三次。have;gonehad;beenhave;been【點(diǎn)評】考查現(xiàn)在完成時(shí)中延續(xù)性動詞和短暫性動詞的轉(zhuǎn)換問題。have kept【答案】C 【解析】【分析】句意是:你必須把書還給圖書館因?yàn)槟阋呀?jīng)……兩個(gè)多星期了。have borrowedhave lent英語疑問句中一般具有時(shí)態(tài)上的對應(yīng)關(guān)系,注意結(jié)合這一特點(diǎn)進(jìn)行區(qū)分?!军c(diǎn)評】英語中的時(shí)態(tài)主要是借助于時(shí)間狀語與上下文語境來進(jìn)行判斷。結(jié)合語境可知上文描述的是現(xiàn)在已經(jīng)完成的動作,故用現(xiàn)在完成時(shí)態(tài)。D.Have, workedB.Did, work【點(diǎn)評】考查open轉(zhuǎn)化為be open, be open里的open是形容詞,不能加ed..8.—— ______you _____ out the problem, Sam?——Not yet, but I39。D.C.B.7.The small shop ________ for several years.A.某人去世了多少年就用延續(xù)性動詞的現(xiàn)在完成時(shí),has故選D。A. was dying過去進(jìn)行時(shí)態(tài);B. has died現(xiàn)在完成時(shí)態(tài);C. died一般過去時(shí)態(tài); D. has been dead現(xiàn)在完成時(shí)態(tài)。D.C.B.for fiv