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根據(jù)生活常識,在夏天只有放在冰箱里的食物才能保證不變質(zhì),unless除非,如果不,相當于if not,引導條件狀語從句,故答案為B。30.In summer, food will go bad quickly ________ we put it into a fridge.A.if B.unless C.a(chǎn)s soon as D.while【答案】B【解析】【詳解】句意:夏天,除非我們把食物放進冰箱里,否則食物很快就會變壞。when當……時候,可表示時間段或時間點,一般主句使用過去進行時,從句使用一般過去時;while當……時候,而;until直到;after在……以后。t go to bed_____ the work was finished.A.when B.while C.until D.a(chǎn)fter【答案】C【解析】【詳解】句意:他們直到工作完成才睡覺。結(jié)合句意和語境可知選A??疾檫B詞辨析。28.Many people like reading newspapers ______ they can learn what39。結(jié)合句意可知,在這里兩個句子之間存在一個相反的讓步關系,though/although/even though雖然;盡管,引導讓步狀語從句,符合句意。A. Unless除非;B. If如果;C. Because因為;D. Though盡管。所以選B。until直到;while當……的時候,同時;before在……之前;after在……之后?!究键c】考查連詞意義辨析。由上句“我認為他一直飲酒”和下句“我不能完全確定”可知,兩者是讓步關系,用though引導讓步狀語從句。24.My grandfather does Chinese Kung Fu every day _________ he is over eighty.A.since B.though C.until【答案】B【解析】句意:我爺爺每天練中國功夫,盡管他80多了。A表示直到…才,B表示當…時,C表示在…之后。直到她媽媽回家她才吃飯。23.Rose cooks meals at home on Sundays. She never eats ________ her mother es back and she’d like to enjoy it together.A.until B.when C.a(chǎn)fter【答案】A【解析】考查連詞辨析。A. unless除非;B. so that以便;C. because因為;D. so long as只要。另外such …that…也是引導的結(jié)果狀語從句,such后面跟名詞,如:This is such an interesting book that everyone wants to read it.22.What a mess! The sharing bikes are thrown everywhere.Let’s collect and put them in the right place they can be used conveniently.A.unless B.so that C.because D.so long as【答案】B【解析】句意:——真是一團糟!共享自行車到處都是。so that引導目的狀語從句,其從句中的謂語動詞通常和can, may, should等情態(tài)動詞連用,而且主句和從句之間不使用逗號,意為“以便,為了,使能夠”。如:1) This book is so interesting that everyone wants to read it. 這本書很有趣,人人都想看看。第二個空格后為從句,排除故B,D;novel 為 名詞,形容詞interesting作定語修飾novel,such an interesting novel如此有趣的一部小說,故選C。too+形容詞或副詞+to+動詞原形,意思是“太……而不能”;such...that...和so...that...意思都是“如此……以至于……”,such后接名詞,so后接形容詞或副詞,that后接從句。波特是如此有