一、选择题1．________ you've tasted them, you can't imagine how delicious the dishes are. A．Because B．Although C．Unless D．So2．— Celia，join us in the Super Summer Camp if it this weekend.—.I'd love to. But nobody knows if it .A．is fine; rains B．is fine; will rain C．will be fine; will rain D．will be fine; rains 3．—the water was cold , Wei Qinggang jumped into it to save others.A．Although B．When C．If D．Because4．We always don't realize time goes by, ________we're playing games.A．while B．although C．unless D．if5．___________ many people may surf the Internet for the latest news, it is impossible that the newspaper will disappear.A．Beacause B．Though C．Since D．Unless6．It’s________a difficult question that few of us can answer it.A．quite B．so C．such D．very7．—I’m afraid I can’t finish the job in such a short time.—Don’t worry. Can you do it if you_______ two more hours.?A．give B．are given C．will give D．will be given 8．— What shall we do now?—__________ it’s raining hard, let’s stay at home.A．So B．Since C．Though D．Otherwise9．________ they are sisters, they don’t look the same.A．Though B．Because C．But10．It was ____ bad weather ____ I had to stay at home.A．too, to B．so, that C．such, that D．as, as11．If you _______ someone, you invite them to flight or compete with you in some way. A．encourage B．challenge C．introduce12．—You look so sleepy. What’s the matter with you , Carmen?—I’ve been working for ten hours. I am__________tired ___________ I want to sleep.A．so ; that B．such; thatC．between; and D．neither; nor13．I felt very happy, ___________ I didn't win the singing competition.A．though B．if C．so D．because 14．—My son hardly even eats vegetables________ it’s good for his health.— Not a good habit.A．and B．but C．so D．although15．I’ll go to visit my aunt in England the summer holidays start.A．as soon as B．since C．unless16．—Are you going to Mary’s party tonight?—No, I won’t go__________ you go.A．because B．when C．unless D．though 17．__________ what he explains to you, just don’t believe him.A．However B．Even though C．But D．No matter 18．— When shall we start?—Let’s wait ________ the rain stops.A．if B．as C．until D．since19．You can’t watch TV ________ you finish your homework.A．after B．if C．when D．until 20．Mr. Huang decided to buy that CD player ________ it was expensive.A．even though B．so that C．as soon as D．as if 21．—How’s the weather tomorrow?—I don’t know if it ___________ tomorrow.—Well, if it ___________, I won’t go out with you.A．will rain; will rain B．rains; rainsC．rains; will rain D．will rain; rains22．I didn't accept his help ________ I wanted to try it myself.A．because B．thoughC．until D．unless23．________ I feel tired, ________ I don’t want to stop working.A．Though; but B．But; / C．Though; / D．Because; / 24．My father was reading ________ I was sleeping.A．while B．when C．before D．after 25．Sam won’t make any progress ______ he studies harder than before.A．if B．when C．because D．unless【参考答案】***试卷处理标记，请不要删除一、选择题1．C解析：C【解析】【分析】【详解】句意：除非你尝过这些菜，否则你很难想象出它们有多么美味。
考查从属连词辨析。
Because因为；Although尽管；Unless除非；So因此。
结合句意可知，此句是unless引导的条件状语从句，表示“除非”。
故选C。
2．B解析：B【解析】试题分析：句意：——西莉亚，如果这个周末不下雨的话，就来加入我们的超级夏令营吧。
——我非常乐意。
但是没有人知道周末是否会下雨。
第一句中的连词if意为“如果”，用来引导条件状语从句，从句用一般现在时表示将来，故用is fine；第二句中的if意为“是否”，引导宾语从句，根据句意从句用一般将来时will rain。
故选B。
考点：考查条件状语从句的用法和宾语从句的用法。
3．A解析：A【解析】【详解】本题主要考查连词辨析，句意：尽管水很冷，但是魏青刚跳进去救别人。
因此用although 引导让步状语从句；When当……时候；If如果；Because因为，故选A。
4．A解析：A【解析】【详解】句意：当我们打游戏的时候，我们总是无法意识到时间的流逝。
考查从属连词以及状语从句。
while当……时，时间状语从句；although尽管，让步状语从句；unless除非，如果不，条件状语从句；if如果，条件状语从句。
当我们玩游戏时候，我们意识不到时间过得很快。
时间状语从句，故选A。
5．B解析：B【解析】句意：尽管许多人通过网络获取最新消息，但是很可能报纸不会消失。
Because 因为，引导原因状语从句；Though尽管，引导让步状语从句；Since自从，引导时间状语从句；Unless除非，引导条件状语从句。
根据两句话之间的逻辑关系可知应选B。
6．C解析：C【解析】【详解】句意：这个问题是如此的难以至于我们很少有人能回答。
考查such……that句型。
quite相当，后面接形容词原形；so如此，后面接形容词或副词，与that构成so……that句型“如此……以至于”；such如此，后面接名词或名词短语；very非常，后面接形容词或副词，根据所给空后面的a difficult question是名词短语，所以用such，故选C。
7．B解析：B【解析】【分析】【详解】句意：——我担心我不能在这么短的时间里完成工作。
——不要担心，如果再多两个小时，你做得到吗？考查if引导的条件状语从句。
give给，原形；are given被给，被动语态；will give将会给，将来时；will be given将会被给。
在if引导的状语从句中，用一般现在时代替一般将来时；主语you是动作的承受者，所以用被动语态。
故选B。
8．B解析：B【解析】【分析】【详解】句意：——我们现在该做什么？——既然雨下得这么大，就让我们呆在家里吧。
考查原因状语从句。
A. so 因此，所以，表示结果；B. since 既然，由于，自……以来，表示原因或时间；C. though虽然，尽管，引导让步状语从句；D. otherwise 否则。
根据句意可知这里应该是表示原因的，故选B。
9．A解析：A【解析】【分析】【详解】句意：虽然她们是姐妹，但她们看起来不一样。
考查连词，A. Though尽管，虽然，引导让步状语从句；B. Because因为，引导原因状语从句；C. But但是，表转折。
观察句子逻辑结构，应该是though引导的让步状语从句，故选A。
【点睛】though、although均引导让步状语从句，意为“虽然……”，although较正式，though最常用。