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辨析。句意:星期天羅斯在家做飯。直到她媽媽回家她才吃飯。她喜歡和媽媽一起享用。A表示直到…才,B表示當(dāng)…時,C表示在…之后。根據(jù)句意,故選A。41.John didn’t give up looking for a job ________ he got an offer from a German pany.A.until B.since C.because D.if【答案】A【解析】【詳解】句意:約翰一直沒有停止找工作,直到它在一家德國公司得到一個職位。Until直到;since由于,自從……以來;because因為;If是否,如果。短語not……until……,直到……才,故選A。42.When you are in your school dining hall during lunchtime, you may feel lonely _______ you can find someone to have lunch with.A.if B.unlessC.a(chǎn)fter D.because【答案】B【解析】【分析】【詳解】句意:當(dāng)你在學(xué)校食堂吃午飯的時候,你可能會感到孤獨,除非你能找個人一起吃午飯??疾檫B詞用法辨析。if如果,unless除非,都表條件;after表時間,because表原因。本句前后句是條件關(guān)系,可排除CD兩項。根據(jù)句意可知if不合句意,故選B。43.She stopped talking her mother came into the room.A.a(chǎn)s soon as B.unless C.though【答案】A【解析】句意:她媽媽一進(jìn)到房間里,她就停止了說話。A. as soon as 一就; B. unless 除非; C. though盡管;這里是考察連詞,根據(jù)She stopped talking 和her mother came into the ,可知是媽媽一進(jìn)到房間里,她就停止了說話;故選A44.—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. the journey was tiring,Jeff thought it was worth both the time and the money.A.As B.Since C.Unless D.Although【答案】D【解析】【詳解】句意:雖然旅途很累,杰夫認(rèn)為時間和金錢都值得。A. As當(dāng)……的時候;B. Since 自從;C. Unless除非;D. Although盡管。根據(jù)下文Jeff thought it was worth both the time and the ,這里用Although引導(dǎo)。根據(jù)題意,故選D。46.You will be late for school________ you don’t get up early.A.but B.if C.a(chǎn)nd D.or【答案】B【解析】【詳解】句意:如果你不早起,你將會上學(xué)遲到。be late for school上學(xué)遲到;get up起床。but表示前后是轉(zhuǎn)折關(guān)系;and表示前后并列或遞進(jìn)關(guān)系。由此知前后句構(gòu)成“結(jié)果+條件”的關(guān)系,即“如果你不早起,你將會遲到?!?。故選B。47.Has the meeting begun yet?Not yet. We have to wait everyone is here.A.a(chǎn)nd B.until C.or D.but【答案】B【解析】【詳解】考查連詞用法。句意:—會議已經(jīng)開始了嗎?—不,還沒有。我們必須等到大家都到齊了。and和;until直到;or或者、否則,but但是。根據(jù)題干可知我們得等到大家都到了,這里表示直到……時候用until.故選B.48.You39。d better take the map with you you won39。t get lost.A.so that B.a(chǎn)s soon as C.now that D.a(chǎn)s long as【答案】A【解析】【詳解】句意:你最好帶上地圖,這樣你就不會迷路??疾檫B詞短語辨析。A. 以便于,表目的;B. 一……就,表條件;C. 既然,表原因;D. 只要,表條件。根據(jù)題干可知你最好帶上地圖的目的是為了不會迷路,本句是so that引導(dǎo)的目的狀語從句,故選A。49.—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?!玫?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。50.Some children prefer to eat sweet chocolate _____ it’s not good for their health.A.because B.if C.when D.though【答案】D【解析】【詳解】句意:有些孩子喜歡吃甜巧克力,雖然這對他們的健康不好。考查從屬連詞辨析。A. because因為;B. if假如;C. when什么時候;D. though雖然、盡管。根據(jù)句子前后意思的對比,可知孩子喜歡吃甜巧克力和對健康不好兩者構(gòu)成一種讓步關(guān)系,表示盡管知道這樣做不好但仍然這樣去做,結(jié)合選項只有although有這種含義,后面引導(dǎo)一個讓步狀語從句,故答案選D。