She says that she’ll have to close the shop ________ business improves. A.if B.unless C.a
Shesaysthatshe’llhavetoclosetheshop________businessimproves.A.ifB.unlessC.afterD.when...
She says that she’ll have to close the shop ________ business improves. A.if B.unless C.after D.when
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B |
句意为:她说除非生意好起来,要不然这店得一直关下去。unless ="if" not(如果不,除非)其它选项不符合题意。 【考点定位】考查连词。连词unless意为“除非……如果不……”,“除了……”,多引导一个否定意义的真实条件句,有时也可引导非真实条件句。unless引导条件句时,主要用于下列情况:(1)主句为肯定句。如: Unless I visit every bookstore in town,I shall not know whether I can get what l want.如果我不到城里每一家书店去看看,我就不知道是否能买到我想要的书。(2)主句为否定句。如: Unless you oil the motor regularly.it won’t run smoothly.要不是你经常给发动机上油。它就不会转得那么顺畅。 unless在意义上相当于if...not,因此在有些场合中unless与if...not可互换使用。如:Unless I am mistaken.I’ve seen that man before.="lf" I am not mistaken。I’ve seen that man before.如果我没搞错,我以前见过那个人。但在有些情况下,二者不可互换使用。如:(1)当unless引导非真实条件句时,一般不可改用if...not。如:They couldn’t afford to live in such an expensive apartment unless they were rich.除非他们很富有,否则就住不起这么昂贵的公寓。(2)当if引导名词性从句时,unless不可以代替if...not,因为if=whether(“是否”)。如: It is unimportant if he will not attend the graduation ceremony.他是否参加毕业典礼无关紧要。(3)当unless作介词(“除……以外”,“除非”)时,if...not不能与其互换使用。如:Nothing will come out of it.unless(=except)disaster.这件事除了引起灾祸之外,不会有什么结果。 |
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