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【點評】考查連詞辨析,首先識記連詞詞義,然后根據(jù)句意確定。......否則;;;。D.C.B.20._______________ you start right now, you will be late for the meeting. A. 【點評】考查連詞辨析。A 然而,當……的時候;B 因為;C 除非,如果不;D 自從。D.unlessB.while注意識記until和主謂一致的用法。until意為“直到……為止”,通常與延續(xù)性動詞連用;not until意為“直到……才”,常與短暫性動詞連用,這里的句意為,直到明年才開通,故第一空用not until;第二空的half指的是half the railway,主語為the railway,謂語動詞應(yīng)用單數(shù),因此填has,故選B。 have【答案】 B 【解析】【分析】句意:——連接兩個城市的鐵路什么時候會開通?——直到明年。D.Until。 hasB.Until。 【點評】考查連詞,注意either,or的用法。——既然你只剩下一張票,要么我妹妹要么我和你一起去。not only。 norC.either。 andm really sorry. Then what about next time?A. 【點評】考查連詞辨析,注意or的用法。根據(jù)語境可知,此處表選擇,用or。D.butB.and注意句子涉及到祈使句,and/or+陳述句的用法。 該句是祈使句,且句子前后是并列順承關(guān)系, 因此用and,故答案選D。and【答案】 D 【解析】【分析】句意:比爾,不要抽煙,那么你很快好起來。C.afterll get better soon. A.D.C.B.14.—Why do many kids spend more time playing puter games? —Because their parents are _____ busy _____ they have little time to stay with their children. A.祈使句+and/or+句子,固定搭配,根據(jù)句意可知是努力學(xué)習(xí),否則會失敗,故選D。or【答案】 D 【解析】【分析】句意:Emily,你又玩游戲!努力學(xué)習(xí),否則你將在接下來的考試中失敗。andsothenD.thoughB.soD.as soon asB.whenD.C.B.because【答案】 C 10.She got up very early that day __________ she could catch the first train. A.C.butunless【答案】 D 9.Study hard, _______ our parents will be disappointed. A.C.whenwhile【答案】 D 8.The situation is being more serious ________________ we do something to save the Earth. A.C.ass father was cleaning the car _______________ his mother was doing house