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you work hard.A.if B.unless C.though D.since【答案】B【解析】試題分析:句意:如果你不努力學(xué)習(xí),你會(huì)落后別人。;B. If如果;C. Unless如果不; D. Though雖然。結(jié)合句意,故選B考點(diǎn):考查連詞的用法.20.At last, Amy grew ____ tired ____ she fell asleep.A.a(chǎn)s。 as B.such。 that C.so。 that D.not only。 but also【答案】C【解析】【詳解】句意:最后,艾米累得睡著了。A. as。 as 與…一樣;引導(dǎo)比較狀語從句;B. such。 that如此...以致。如此...以至于,引導(dǎo)結(jié)果狀語從句;C. so。 that如此…以致…;引導(dǎo)結(jié)果狀語從句;D. not only。 but also不但…而且…連接兩個(gè)并列主語。根據(jù)句意可知,此句是結(jié)果狀語從句,such是形容詞,修飾名詞;so是副詞,與形容詞或副詞連用。本題第一空所填詞要修飾形容詞tired,所以應(yīng)填so,故選C。21. — When did you go to bed last night?— ____________ I finished my homework.A.Until B.Not until C.When D.While【答案】B【解析】not …until 表示直到…才,與短暫性動(dòng)詞連用,故選B22. Lucy knew nothing about it _____ her sister told her.A.because B.until C.if D.since【答案】B【解析】試題分析:句意:露西直到她姐姐告訴她才知道這件事。Because因?yàn)椋?until直到; if如果; since自從。Notuntil直到才,是一個(gè)固定句型。所以選B??键c(diǎn):考查連詞。23.You won39。t succeed _____ you work hardA.if B.because C.unless D.so that【答案】C【解析】【詳解】句意:你不會(huì)成功的,除非你努力工作。if如果;because 因?yàn)椋龑?dǎo)原因狀語從句;unless如果不,除非;so that以至于,引導(dǎo)結(jié)果狀語從句;為的是,引導(dǎo)目的狀語從句。根據(jù)句意可知,這里表示“如果不努力工作”,故應(yīng)選C。24.—I’m afraid the class has begun.—Don’t worry. It ________ until the bell ________.A.doesn’t begin。 rings B.won’t begin。 will ringC.won’t begin。 rings D.doesn’t begin。 will ring【答案】C【解析】試題分析:句意:恐怕課已經(jīng)開始了。一不要擔(dān)心。直到鈴聲響了才會(huì)開始。前面是主句,會(huì)議還沒開始,所以用一般將來時(shí);后面是until引導(dǎo)的時(shí)間狀語從句,所以要用一般現(xiàn)在時(shí)代替一般將來時(shí)。所以選C??键c(diǎn):考查動(dòng)詞時(shí)態(tài)。25.The Bund looks _______beautiful at night that it attracts a lot of tourists every day.A.very B.so C.such D.quite【答案】B【解析】【詳解】句意:外灘在晚上看起來很漂亮,每天都吸引了很多游客??疾楣潭ńY(jié)構(gòu)辨析。so/such…that是固定結(jié)構(gòu),表示“如此……以至于”,引導(dǎo)結(jié)果狀語從句,可排除AD兩項(xiàng)。so修飾形容詞或副詞,such修飾名詞或名詞性短語。本句beautiful(漂亮的)是形容詞,需用so;根據(jù)句意結(jié)構(gòu)和語境,可知選B。26._____ they are very tired, they feel happy because they’ve finally finished their project.A.So B.Although C.If D.But【答案】B【解析】【詳解】句意:盡管他們很累,他們感到高興,因?yàn)樗麄兘K于完成了他們的項(xiàng)目??疾檫B詞辨析。A. So 因此;B. Although盡管;C. If如果;D. But但是。分析句意可知,他們雖然很累,但很快樂,前半句是讓步狀語從句,用Although。答案選B。27.– Thank you for telling me so much knowledge about nature.–Don’t mention it. ______ you have more questions, e to me any time.A.IfB.BecauseC.Though【答案】A【解析】句意:——謝謝你告訴我這么多關(guān)于自然的知識(shí)?!?jiǎng)e提了。如果你有更多的問題,隨時(shí)找我??疾檫B詞辨析題。本句是條件狀語從句,需用if連接,而because表原因,though表讓步,都可排除。根據(jù)句意結(jié)構(gòu)和語境,可知選A。28.“A white elephant” means something that is useless, ___________ it may cost a lot of money.A.unless B.until C.since D.a(chǎn)lthough【答案】D【解析】【詳解】句意:“白象”指的是無用的東西,盡管它可能要花很多錢。考查連詞辨析。A. unless除非,引導(dǎo)條件狀語從句;B. until直到……才……,引導(dǎo)時(shí)間狀語從句;C. since由于,引導(dǎo)原因狀語從句;D. although盡管,引導(dǎo)讓步狀語從句。根據(jù)句意,本句是讓步狀語從句,故選D。29.____it rained a lot, we enjoyed our holiday.A.Although B.Because C.Unless D.However【答案】A【解析】【詳解】句意“盡管雨下得很大,但是我們?nèi)匀幌硎芪覀兊募倨凇薄#ㄒ龑?dǎo)讓步狀語從句);(引導(dǎo)原因狀語從句);(引導(dǎo)條件狀語從句);,但是(后加逗號(hào))。根據(jù)句意可知,空前和空后之間表示讓步,用although,故選A。30.No matter ________________, you must follow the school rules.A.where are you B.what do you doC.who are you D.who you are【答案】D【解析】【分析】【詳解】句意:無論你是誰,你都應(yīng)該遵守學(xué)校的規(guī)章制度。此題考查狀語從句。根據(jù)語序用陳述語序,應(yīng)