2．can’t help/choose but do...只好做…… 3．can’t but do...不得不做…… 4．can’t help doing...情不自禁做…… 5．it can’t be helped实在没办法；无法避免 6．more than sb.can...非某人所能…… 7．may/might well do...……很有可能做某事
8．may/might as well do...不妨做……；还是做……的好 考点9 虚拟语气的用法
1．If the new safety system ________ to use，the accident would never have happened.
(2017·北京，34)
A．had been put B．were put C．should be put D．would be put 答案 A
解析 句意为：要是新的安全系统被投入使用了的话，这起事故就不会发生了。此处表示与过去事实相反的情况，所以从句谓语用过去完成时，选A项。 2．—Do you have Betty’s phone number?
—Yes.Otherwise，I ________ able to reach her yesterday.(2017·天津，15) A．hadn’t been C．weren’t 答案 B
解析 句意为：——你有贝蒂的电话号码吗？——有。不然我昨天就联系不上她了。由空前的otherwise及句意可知应用虚拟语气，此处表示与过去事实相反的情况，谓语动词用would have done，故选B项。
3．________ not for the support of the teachers，the student could not overcome her difficulty.
(2017·江苏，22)
A．It were C．It was 答案 B
解析 句意为：如果没有老师们的支持，这名学生不可能战胜困难。此处表示与现在事实相反的假设，从句谓语用were；在非真实条件句中，如果有should，had或were时，可以省略if，而把should，had或were提至主语前，形成部分倒装，故选B项。
B．Were it D．Was it
B．wouldn’t have been D．wouldn’t be
4．Without his wartime experiences，Hemingway ________ his famous novel A Farewell
to Arms.
(2015·重庆，7)
A．didn’t write C．wouldn’t write 答案 D
解析 句意为：要是没有战争时的经历，海明威就不会写出他的著名小说《永别了，武器》。该句使用了含有without的含蓄虚拟语气，由语境知，这里是对过去情况的假设，因此主句谓语用“would/could/should/might＋have done”，故D项正确。
5．It is lucky we booked a room，or we ________ nowhere to stay now.(2015·安徽，32) A．had C．would have 答案 C
解析 句意为：很幸运我们订了一个房间，否则我们现在将无处可住。or引导含蓄虚拟条件句，根据“now”可知，是对现在的情况进行虚拟，因此用“would＋动词原形”，故选C。 6．Ellen is a fantastic dancer.I wish I ________ as well as her.(2015·陕西，23) A．dance C．had danced 答案 D
解析 句意为：埃伦是一位了不起的舞蹈家。要是我能跳得像她一样好那该有多好啊！I wish后接从句，从句用虚拟语气。叙述与现在事实相反的情况时，谓语动词用过去式(be用were)；叙述与将来事实相反的情况时，谓语动词用could/should/would/might do；叙述与过去事实相反的情况时，谓语动词用had done。由语境可知，此处叙述的是与现在事实相反的情况，故谓语动词用过去式，选D项。
7．We would rather our daughter ________ at home with us，but it is her choice，and she is not a child any longer.(2014·陕西，23) A．would stay C．stayed 答案 C
解析 would rather后跟宾语从句时，从句用虚拟语气，从句用虚拟语气，即从句谓语动词用过去式表示与现在或将来事实相反；用“had＋过去分词”表示与过去事实相反。根据后一句中的is可知，此处表示与现在或将来事实相反，故此处动词应用过去式，故选C项。 8．It was John who broke the window.Why are you talking to me as if I ________ it？
B．has stayed D．stay B．will dance D．danced B．had had D．would have had B．hadn’t written D．wouldn’t have written