核心考点十 状语从句
——使表达丰富多彩
1．(2013·北京，30)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
解析 考查状语从句。句意：假期时我带上我的驾照，以防万一我想租一辆车。故选A。
答案 A
2．(2013·湖南，23)You must learn to consult your feelings and your reason________you reach any decision.
A．although B．before C．because D．unless
解析 考查状语从句。根据句意：在你做任何决定之前，你得学会顾及到你的感觉和你做此决定的原因，可知答案为B(在……之前)。
答案 B
3．(2013·江苏，28)In the global economy，a new drug for cancer，________it is discovered，will create many economic possibilities around the world.
A．whatever B．whoever C．wherever D．whichever
解析 考查状语从句。此处考查－ever引导的让步状语从句。通过分析从句，可知句子不缺少主干成分，故排除代词A、B、D三项，故答案选C。
答案 C
4．(2013·江西，28)She says that she'll have to close the shop ________ business improves.
A．if B．unless C．after D．when
解析 考查状语从句。根据句意：如果生意没有好转，她就只得关店铺。unless＝if...not(如果不)，故答案选B。
