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. ever since自從;B. although雖然、盡管;C. as soon as一…就;D. so that以便;所以。根據(jù)Cathy is afraid of the dog. 凱西害怕狗,可推知是她一看到狗就跑開了,結(jié)合選項(xiàng)可知C選項(xiàng)符合題意,故答案選C。40._______ you use your dictionary often, your spelling will improve.A.Whether B.IfC.Though D.While【答案】B【解析】試題分析:Whether是否;If是否,如果;Though 雖然,盡管;While 然而,當(dāng)……時(shí)。句意:如果你經(jīng)常使用詞典,你的書寫會很快提高的。結(jié)合語境可知選B??键c(diǎn):考查連詞辨析41.—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?yàn)椋?C. unless除非; D. after在……之后,根據(jù)句意此題選C??键c(diǎn):考查連詞的用法42._____ 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。43.Chen Wei isn’t at school today ________ he is taking a robot petition in Shanghai.A.so B.because C.before D.if【答案】B【解析】試題分析:句意:陳煒今天不在學(xué)校因?yàn)樗谏虾⒓訖C(jī)器人競賽。so所以;because因?yàn)?;before在……之前;if如果。所以選B??键c(diǎn):考查連詞。44.— What were you doing ______ I knocked at the door?— I was sleeping.A.unless B.onceC.when D.while【答案】C【解析】【詳解】試題分析:句意:-我敲門時(shí),你在做什么?-我在睡覺。A.unless如果不,除非;引導(dǎo)條件狀語從句;B.once一旦……,引導(dǎo)條件狀語從句;C.when當(dāng)……時(shí),表示兩個(gè)動作同時(shí)發(fā)生,主句一般使用過去時(shí),從句使用過去進(jìn)行時(shí);D.while當(dāng)……時(shí),表示兩個(gè)動作同時(shí)發(fā)生,后跟延續(xù)性動詞,從句一般使用進(jìn)行時(shí)態(tài),表示一段時(shí)間。本題表示“當(dāng)……時(shí)”,knock是非延續(xù)性動詞,故選C。考點(diǎn):考查連詞辨析。45.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(gè)職位。Until直到;since由于,自從……以來;because因?yàn)椋籌f是否,如果。短語not……until……,直到……才,故選A。46. Talk to your teacher and you will get help ________ you have a problem.A.unless B.ifC.until D.so【答案】B【解析】試題分析:unless除非,如果不; if是否,如果;until直到;So因此。句意:如果你有問題,給你的老師說說,你就會得到幫助。故選B。考點(diǎn):考查連詞辨析47. 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(shí)間和金錢都值得。A. As當(dāng)……的時(shí)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。48.I39。m sure dreams don39。t work you do.A.if B.until C.when D.since【答案】B【解析】【詳解】句意:我相信夢想在你做之前是不會實(shí)現(xiàn)的??疾檫B詞辨析。if如果,表?xiàng)l件;until直到,表時(shí)間,多與not連用表示“直到……才”;when什么時(shí)候,表時(shí)間;since自從,用于表示一段時(shí)間。本句是“not …until”結(jié)構(gòu),根據(jù)句意結(jié)構(gòu)和語境,可知選B。49.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。50.Eddie was sleeping _______ Millie was reading a magazine.A.until B.while C.before D.a(chǎn)fter【答案】B【解析】【分析】【詳解】試題分析:句意:埃迪在睡覺,同時(shí)米莉正在讀一本雜志。until直到;while當(dāng)……的時(shí)候,同時(shí);before在……之前;after在……之后。while前后連接兩個(gè)進(jìn)行時(shí)態(tài)的句子。所以選B。