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though 引導(dǎo)讓步狀語從句;故選B41.It was the middle of the night _____the sound of the piano woke me up.A.because B.if C.when D.a(chǎn)lthough【答案】C【解析】【詳解】句意:正是半夜鋼琴聲把我吵醒了。A. because因為;B. if如果;C. when 當(dāng)……的時候;D. although盡管,雖然。根據(jù)下文the sound of the piano woke me 。根據(jù)題意,故選C。42.He didn’t go to school yesterday _______ he was ill.A.because B.because of C.if D.so【答案】A【解析】【詳解】句意:他昨天沒去上學(xué),因為他病了。本題的含義是昨天他沒有去上學(xué),“他病了”應(yīng)該是他沒上學(xué)的原因,because后跟原因從句,because of后跟單詞或短語,if如果后接條件狀語從句,so因此。故選A。43. Excuse me. Is it my turn now? Not yet. Please wait outside ________ your name is called.A.untilB.sinceC.so【答案】A【解析】句意: 打擾一下。 輪到我了嗎? 還沒。請在外面等直到你的名字被叫到。until用于肯定句中,意為“到…為止”,表示動作一直持續(xù)到所說時間為止,本句就是說“到名字被叫到為之,請一直等待”,前半句和后半句中不存在因果關(guān)系,排除C,也沒有表示“自從”的意味,排除B,故選A。44.—Betty, do you know if Tony ______ the photo petition?—He will, if he ______ his project on Australia.A.enters。 finishes B.enters。 will finishC.will enter。 finishes D.will enter。 will finish【答案】C【解析】【詳解】句意:貝蒂,你知道托尼是否要參加攝影比賽?他會的,如果他完成了有關(guān)澳大利亞的課題。問句中if引導(dǎo)的是賓語從句,翻譯為是否,前者問的是將來;答語是由if引導(dǎo)的條件狀語從句,所以遵循主將從現(xiàn)的原則,所以if之后用一般現(xiàn)在時。所以答案選C。45.He was so busy preparing for the high school entrance exam that .A.he had enough time to watch football matches every dayB.he was free enough to go shopping onlineC.he had no time to do sports every day【答案】C【解析】【詳解】句意:他忙于準(zhǔn)備高中入學(xué)考試,以至于他每天都沒有時間做運動??疾榻Y(jié)果狀語從句。A. 他每天有足夠的時間看足球比賽;B. 他有足夠的時間去網(wǎng)上購物;。本句是“so…that”結(jié)構(gòu),表示“如此……以至于……”,引導(dǎo)結(jié)果狀語從句;根據(jù)“He was so busy preparing for the high school entrance exam”可知沒有時間娛樂、購物或做運動,A、B兩項不合句意,故選C。46.Let39。s go climbing Langshan Mountain this Saturday __________ the weather is fine.Good idea!A.though B.if C.unless【答案】B【解析】【詳解】句意“如果天氣好,周六我們?nèi)ヅ缻~山吧。好主意”。(引導(dǎo)讓步狀語從句);(引導(dǎo)條件狀語從句);(引導(dǎo)條件狀語從句)。根據(jù)句意可知,譯為“如果天氣好”,表示條件,故選B。47.—Ling ling, you39。ll feel sleepy tomorrow _______ you go to bed early.—OK, Mom. I’ll go to bed at once.A.if B.unless C.though D.because【答案】B【解析】【詳解】句意:——玲玲,如果你不早點睡覺,明天你會感到困的。——好的,媽媽。我馬上去睡覺??疾檫B詞辨析。A. if如果,引導(dǎo)條件狀語從句;B. unless如果不、除非,相當(dāng)于if not,引導(dǎo)條件狀語從句;C. though雖然、盡管,引導(dǎo)讓步狀語從句;D. because因為,引導(dǎo)原因狀語從句。通過分析主從句之間的邏輯關(guān)系可知應(yīng)該選擇引導(dǎo)條件狀語從句的從屬連詞if或unless,再根據(jù)句子所表達(dá)的含義“如果不早點睡,明天就會感到困”可知unless符合語意,排除if;故答案選B。48.The environment will be much worse ___________ everyone has a sense of protecting it.A.unless B.if C.so that【答案】A【解析】【詳解】句意:除非每個人都有保護環(huán)境的意識,否則環(huán)境會更糟。考查連詞辨析。unless除非,表條件,相當(dāng)于if not;if如果,表條件;so that以便于,表目的。本句是條件狀語從句,根據(jù)句意語境,可知if不合句意,故選A。49.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。A. if如果;B. unless除非;C. as soon as一……就;D. while正當(dāng)……的時候。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(dāng)于if not,引導(dǎo)條件狀語從句,故答案為B。50.—I’m busy with my schoolwork these days.—That’s great! You won’t get good grades ______ you work hard.A.if B.becauseC.unless D.a(chǎn)fter【答案】C【解析】試題分析:句意:這些天我忙著學(xué)校工作。那太好了,除非你努力工作,否則你不會取得好成績。A. if如果; B. because因為; C. unless除非; D. after在……之后,根據(jù)句意此題選C??键c:考查連詞的用法