【正文】 工作。那太好了，除非你努力工作，否則你不會(huì)取得好成績(jī)。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41．—Let’s have a piic if it ________ this Sunday.—But nobody knows if it ________ on that day.A．will be fine。 will rain B．will be fine。 rains C．is fine。 will rain D．is fine。 rains【答案】C【解析】【詳解】句意：——如果這個(gè)星期天天氣好，我們?nèi)ヒ安桶??！珱](méi)人知道那天會(huì)不會(huì)下雨。第一空是if引導(dǎo)的條件狀語(yǔ)從句，從句用一般現(xiàn)在時(shí)態(tài)，主語(yǔ)是it，這里be動(dòng)詞用is。排除AB；第二空是if引導(dǎo)的賓語(yǔ)從句，根據(jù)語(yǔ)境可知用一般將來(lái)時(shí)，其結(jié)構(gòu)是will{動(dòng)詞原形。根據(jù)題意，故選C。42．________ jeans were invented over 100 years ago, they39。re still in fashion today.A．Because B．If C．Although D．Since【答案】C【解析】【詳解】句意：盡管牛仔褲在100多年前就被發(fā)明了，現(xiàn)在他們?nèi)匀缓芰餍??？疾檫B詞辨析。A. Because 因?yàn)椋?B. If 如果； C. Although 盡管； D. Since自從。結(jié)合句意，牛仔褲被發(fā)明了100多年，現(xiàn)在仍然流行?？芍昂蟊硎咀尣疥P(guān)系，故用連詞although，故選C?？键c(diǎn)：考查連詞的用法。43．Little Jack has learned to do lots of things on his own , ______ he is only four years old.A．if B．though C．for D．since【答案】B【解析】句意：小杰克自己學(xué)會(huì)了做許多事情，盡管他只有四歲。A. if 如果； B. though 盡管 C. for 因?yàn)?，為了? D. since自從；根據(jù)Little Jack has learned to do lots of things on his own , 和he is only four years ，所以用 though 引導(dǎo)讓步狀語(yǔ)從句；故選B44．The teacher speaks very loudly all the students can hear her.A．so that B．because C．since D．when【答案】A【解析】【詳解】句意：為了讓所有學(xué)生都能聽(tīng)見(jiàn)她，老師講得非常大聲。A. so that 是固定詞組，引導(dǎo)目的狀語(yǔ)從句時(shí)，表示“以便；為了”，從句中常使用can /could /may /might /will /would /should等情態(tài)動(dòng)詞或助動(dòng)詞，因此選A。B. because 意為“因?yàn)椤?；C. since 表示“自……以來(lái)，因?yàn)?，由于”；D. when 意為“當(dāng)……時(shí)”。老師大聲說(shuō)話的目的是讓學(xué)生們都聽(tīng)到，所以，B、C、D均不符合題意。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(méi)有停止找工作，直到它在一家德國(guó)公司得到一個(gè)職位。Until直到；since由于，自從……以來(lái)；because因?yàn)?；If是否，如果。短語(yǔ)not……until……，直到……才，故選A。46．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(shí)候，你可能會(huì)感到孤獨(dú)，除非你能找個(gè)人一起吃午飯?？疾檫B詞用法辨析。if如果，unless除非，都表?xiàng)l件；after表時(shí)間，because表原因。本句前后句是條件關(guān)系，可排除CD兩項(xiàng)。根據(jù)句意可知if不合句意，故選B。47． 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(wèn)題，給你的老師說(shuō)說(shuō)，你就會(huì)得到幫助。故選B?？键c(diǎn)：考查連詞辨析48．My family always go somewhere interesting the holiday begins.A．a(chǎn)s soon as B．soC．so that D．even though【答案】A【解析】試題分析：句意：一放假，我們家總是去一些有趣的地方。A. as soon as一……就……。表示時(shí)間；B. so因此。表示結(jié)果；C. so that 以便，為了，表示目的；D. even though盡管，即使，表示條件。假期開(kāi)始，指時(shí)間，用as soon as：一放假就去參觀有趣的地方。故選A?？键c(diǎn)：考查連詞辨析。49．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(shuō)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(shuō)話；故選A50．Lots of people exercise every morming_________bad weather stops them.A．if B．unless C．until D．since【答案】B【解析】考查連詞詞義辨析。A. if“如果”；B. unless“除非；如果不”；C. until“直到”；D. since“自從；既然”。句意：很多人每天早晨鍛煉 _______ 惡劣的天氣阻攔他們。結(jié)合選項(xiàng)的意思和句意可知，用unless。故選B。