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介詞短語(yǔ),做定語(yǔ)不是主語(yǔ),所以用has。王老師去公園了不在這里,所以用has gone to。故選A?!军c(diǎn)評(píng)】考查主謂一致和短語(yǔ)的用法。13.All the students _______ very hard over the last three years.A.worksB.has workedC.have workedD.worked【答案】 C 【解析】【分析】Over the last three years, 用于現(xiàn)在完成時(shí),又由于主語(yǔ)是復(fù)數(shù),故選C?!军c(diǎn)評(píng)】現(xiàn)在完成時(shí)的時(shí)間狀語(yǔ)要掌握。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(yǔ)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(yǔ)及主語(yǔ)+with 短語(yǔ)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?!军c(diǎn)評(píng)】考查現(xiàn)在完成時(shí)。17.It has been three years since I ______ a teacher.A.beeB.becameC.beingD.to bee【答案】 B 【解析】【分析】題意:現(xiàn)在完成時(shí)里,since從句里動(dòng)詞應(yīng)用一般過去時(shí)。故選B?!军c(diǎn)評(píng)】考查現(xiàn)在完成時(shí)和表示一段時(shí)間的時(shí)間狀語(yǔ)的連用用法,理解題意,即可得出答案。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 gone to,表示去了某地,還沒回來。many times是很多次,游客們應(yīng)該是去過很多次,用have/has been to+地點(diǎn),由于主語(yǔ)是復(fù)數(shù),助動(dòng)詞用ha