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eaveleft fromleaves19.Little Tom 根據(jù)“two years ago”可知,第一空應(yīng)用一般過(guò)去時(shí);根據(jù)“for two years”可知,第二空應(yīng)用現(xiàn)在完成時(shí),且動(dòng)詞要用延續(xù)性動(dòng)詞,故選B。left。leaves。left。leaves。18.Jackson 已經(jīng)發(fā)生的事,用現(xiàn)代完成時(shí)。D.C.B.t get into my room now because I _______ my key.A. 【點(diǎn)評(píng)】考查時(shí)態(tài),注意ago和yet的用法。ago是過(guò)去時(shí)標(biāo)志,故排除B和D選項(xiàng),yet是現(xiàn)在完成時(shí)標(biāo)志,因此用hasn39。 didn39。D. hasn39。C.have lent。 return16.I ________my dictionary to my classmate David a week ago, but he ________ it to me yet. A.可知,用現(xiàn)在完成時(shí),have got,故選C。根據(jù)題意可知,本句為定語(yǔ)從句,且從句中缺少主語(yǔ),需要用 that或 who引導(dǎo) , 且 不可省略 , 所以排除A和D。D.that have got the ticketsB.15.All members_______ are admitted to the auditorium. A.故選D。has been【答案】 D 【解析】【分析】句意為“Mike過(guò)去是尖子生,但自從迷上電子游戲以來(lái)成績(jī)落后了”。C.has fallenbehind since he lost himself in puter games.A.14.Mike used to be a top student, but he 表示動(dòng)作從過(guò)去開始持續(xù)到現(xiàn)在用現(xiàn)在完成時(shí),結(jié)構(gòu)為have/has+過(guò)去分詞,因?yàn)橹髡Z(yǔ)是I,助動(dòng)詞用have,故選B。bought【答案】 B 【解析】【分析】句意:——看這些郵票,我持有它們5年了。have boughthave keptkept【點(diǎn)評(píng)】考查現(xiàn)在完成時(shí)。由句意可知應(yīng)用現(xiàn)在完成時(shí)。had caught【答案】 B 【解析】【分析】句意:我感冒了,我現(xiàn)在不舒服。C.have caughta cold. I am not feeling well nowA.12.I since引出的時(shí)間狀語(yǔ)從句,強(qiáng)調(diào)主句謂語(yǔ)從過(guò)去某時(shí)一直延續(xù)到現(xiàn)在,主句用現(xiàn)在完成時(shí)態(tài),the Greens格林一家,表示復(fù)數(shù)含義,作主語(yǔ),謂語(yǔ)用復(fù)數(shù)形式。D.C.B. many places of interest since two years ago.A.11.The Greens固定句式What happened to……發(fā)生了什么?第二空是回答之前并沒(méi)有發(fā)生任何事情,所以不必?fù)?dān)心,用現(xiàn)在完成時(shí),has happened,故答案為D。happened to。happened。happened。 has happened A.t worry. Nothing _______.10.—What _______ you just now?根據(jù)前面的否定猜測(cè),可知懷特小姐去了北京,故選A。她去了北京。will go【答案】A 【解析】【分析】句意:看!你的老師懷特小姐在那邊。C.has beent be her. She ______ to Beijing.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(dòng)詞的過(guò)去分詞,begin和end都是短暫性動(dòng)詞,不能用于現(xiàn)在完成時(shí)態(tài)中表示動(dòng)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