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多少年就用延續(xù)性動(dòng)詞的現(xiàn)在完成時(shí),has been dead。13.—I haven39。t seen your grandfather for two years. What happened to him?—Oh, he ________ here for two years.A.stayedB.hasn39。t stayedC.staysD.hadn39。t stayed【答案】 B 【解析】【分析】答語中的for two years是一段時(shí)間,用在現(xiàn)在完成時(shí)的句中時(shí)?,F(xiàn)在完成時(shí)的結(jié)構(gòu):主語+have/ has +過去分詞??芍xB?!军c(diǎn)評(píng)】考查現(xiàn)在完成時(shí)14.Mike used to be a top student, but he behind since he lost himself in puter games.A.fellB.has fallenC.wasD.has been【答案】 D 【解析】【分析】句意為“Mike過去是尖子生,但自從迷上電子游戲以來成績(jī)落后了”。由since可知but后的主句用現(xiàn)在完成時(shí),瞬間動(dòng)詞fall不能和since引導(dǎo)的時(shí)間狀語從句連用,故用延續(xù)性動(dòng)詞be。故選D?!军c(diǎn)評(píng)】本題考查現(xiàn)在完成時(shí)中非延續(xù)性動(dòng)詞和延續(xù)性動(dòng)詞的轉(zhuǎn)換。15.So far Tom with Mary _______ 50 left behind children to do their homework after school.A.helpB.helpedC.has helpedD.have helped【答案】 C 【解析】【分析】此題要掌握現(xiàn)在完成時(shí)的時(shí)間狀語及主語+with 短語是單數(shù)的概念,即可得出答案。選C。16.Mike began to work in the factory in 2013.He there for four years. A.is workingB.was workingC.worksD.has worked【答案】D 【解析】【分析】句意:邁克在這里工作已經(jīng)4年了。一直持續(xù)的狀態(tài)用現(xiàn)在完成時(shí)。故D選項(xiàng)正確。【點(diǎn)評(píng)】考查現(xiàn)在完成時(shí)。17.His cat has ________ for five weeks.A.diedB.been deadC.dyingD.dies【答案】 B 【解析】【分析】句意:他的貓已經(jīng)死了5個(gè)星期了。die是短暫性動(dòng)詞,不能表示狀態(tài)的延續(xù)。 由時(shí)間狀語 for five weeks可知應(yīng)用延續(xù)性動(dòng)詞,故答案選B?!军c(diǎn)評(píng)】考查現(xiàn)在完成時(shí)。18.A number of tourists _____ Yangzhou many times because such a beautiful city. A.have been toB.has been toC.has gone toD.have gone to【答案】 A 【解析】【分析】句意:很多游客多次去過揚(yáng)州,因?yàn)樗侨绱嗣利惖囊粋€(gè)城市。have been to,表示去過某個(gè)地方,have