1.He is so busy.He cannot afford enough time with his son________he wants to.
A.even if B.as if
C.because D.before
答案 A
解析 2.I have heard a lot of good things about you ________ I came back from abroad.
A.since B.until
C.before D.when
答案 A
解析 句意为：自从我回国以来，听到了你的很多好消息。since自从……以来(至今)，与主句现在完成时匹配。
3.I took my driving license with me on holiday，________I wanted to hire a car.
A.in case B.even if
C.ever since D.if only
答案 A
解析 考查状语从句引导词的辨析。句意为：我随身带了驾照去度假，以备我租车用。in case万一，以防;even if即使;ever since自从……以来;if only要是……就好了。故选A项。
4.One can always manage to do more things，no matter________full one’s schedule is in life
A.how B.what
C.when D.where
答案 A
5.You must learn to consult your feelings and your reason________you reach any decision.
A.although B.before
C.because D.unless
答案 B
解析 考查状语从句引导词的辨析。句意为：你必须学会在做任何决定之前都考虑兼顾好情感与理智。根据常识可知在做决定之前应该三思，而兼顾好情感与理智是行事的前提。
6.Mark needs to learn Chinese________his company is opening a branch in Beijing.
A.unless B.until
C.although D.since
答案 D
解析 考查状语从句——原因状语从句。根据题意，前后之间为因果关系，因为要开分公司，所以需要学习汉语。答案选D。
7.She says that she’ll have to close the shop ________ business improves.
A.if B.unless
C.after D.when答案 B
解析 本题考查状语从句的引导词。句意为：她说，除非生意好转，否则她只能关掉店铺。if如果;unless除非，如果不……;after在……之后;when当……的时候。根据句意，B项符合题意。
8.Everything was placed exactly________he wanted it for the graduation ceremony.(2012·天津，14)
A.while B.when
C.where D.though
答案 C
解析 句意为：为这次毕业典礼所准备的东西全部放在了他所预期的精确的位置上。根据句意以及题干中关键信息词was placed exactly以及he wanted it可知，强调的是一个地点概念，且句子不缺少任何成分，只缺一个地点状语与前文呼应。故答案为C项。
9.________hard you try，it is difficult to lose weight without cutting down the amount you eat.
A.However B.Whatever
C.Whichever D.Whenever
答案 A
解析 15.—Coach，can I continue with the training?
—Sorry，you can’t________you haven’t recovered from the knee injury.
A.until B.before
C.as D.unless
答案 C
解析 句意为：——教练，我可以继续训练吗?——抱歉，你不能，因为你膝盖伤还没有恢复。分析题意可知前后两句有明显的因果关系，故选as表原因。而until，before和unless都需后句用肯定才可与前句的you can’t相符合。
10.I had hardly got to the office________my wife phoned me to go back home at once.
A.when B.than
C.until D.after
答案 A
解析 句意为：我刚到办公室，我妻子就打电话让我立刻回家。“hardly...when...”是固定句型，意为“刚……就……”。类似的结构还有scarcely...when...，no sooner...than...。以上结构中当no sooner，hardly，scarcely放在句首时句子要用倒装语序。
11.At school，some students are active ________ some are shy，yet they can be good friends with one another.
A.while B.although
C.so D.as
答案 A
解析 考查并列连词。句意为：在学校，一些学生很活跃而一些却很害羞，然而他们都可能彼此成为好朋友。根据句意选while，表示两个分句中两种情况的对比。
