1、语法专项（二）情态动词和虚拟语气 单句语法填空1(2019重庆第一次质量抽测)If the new safety system (bring) into use, the accident would never have happened.had been brought解析：句意：如果新的安全系统已经投入使用，事故就不会发生了。根据句意、句子结构以及主句中的would never have happened可知，句中If引导的是虚拟条件句，且表示与过去的事实相反的假设，故从句时态应用过去完成时。2(2019浙江杭州地区七校模拟)When you phoned me, I was havin
2、g a meeting; how I wish I (answer) your call.had answered解析：句意：当你给我打电话的时候，我正在开会。我多么希望我(之前)接了你的电话。wish后的从句中用虚拟语气，根据句意可知是对过去情况的虚拟，所以谓语动词用had done形式。3(2019安徽江淮十校联考)As the deadline is drawing near, no one leave with his own work uncompleted.shall解析：句意：因为截止日期即将到来，不完成工作，任何人不许离开。shall用于第三人称陈述句中，表示命令、警告，符合句
3、意。4(2019东北三校联考)The order came that the medical supplies (send) to the earthquakestricken area soon.(should) be sent解析：表示建议、要求、命令等名词，如：suggestion, order, request, advice等后接的表语从句、同位语从句中谓语动词用(should)动词原形。5(2019湖北四地七校联考)It is high time that you (consider) that if there were no stress in your life, you w
4、ould achieve a little.considered/should consider解析：在It is high time that.句式中，从句用虚拟语气，即：谓语动词用过去式或should动词原形。6(2019天津七校4月联考)I was ill that day, otherwise I (take) part in the sports meet.would have taken解析：句意：那天我病了，否则我就参加运动会了。根据语境可推知，设空处为与过去事实相反的虚拟语气，故答案为would have taken。7(2019湖南长沙四校模拟)I (not) thank y
5、ou enough for what you have done for me.Youre welcome.cant解析：句意：你为我做的一切我无论怎么感谢都不为过。不用谢。can not.enough表示“再也不为过”。8(2019广东惠州二调)Harry is feeling uncomfortable. He have drunk too much at the party last night.must解析：句意：Harry觉得不舒服，他昨晚在聚会上肯定喝太多了。由last night及语境可知，此处表示对过去的肯定情况把握较大的推测。must have done sth.“一定做了某
6、事”。9(2019江苏苏州调研)John wants to see me now, but I have so much work on hand that I would rather he (come) tomorrow than today.came解析：句意：约翰现在想看我，但是我手头有很多工作要做，我宁愿他明天来而不是今天。would rather后面接从句，用虚拟语气，和现在或将来相反用一般过去式，和过去相反用过去完成时，故填came。10(2019包头模拟)As Father and Mother thought it was a big occasion for me, the
7、y suggested I (hold) a birthday party at home to celebrate it.(should) hold解析：suggest表示“建议”时后面宾语从句的谓语动词应用(should)动词原形，故填(should) hold。 单句改错1(2019石家庄一模)Whenever I made mistakes and felt discouraged, my teacher and my classmates would help me figure out how I must have avoided them. mustcould解析：根据语境可知
8、，该句表示“过去本能够做但却未做”，故用could have done。2(2019山东曲阜模拟)We neednt to do so much homework. Therefore, we have more time for afterschool activities. 去掉to解析：need可作实义动词，有时态和数的变化；也可作情态动词，后接动词原形。根据neednt可知，need在此为情态动词，后接动词原形。3(2019成都模拟)In my opinion, by doing parttime jobs, college students must gain some social
9、 experience and broaden their outlooks. mustcan解析：根据语境可知，此处表示通过做业余工作能够获得社会经验，而不是一定获得。4(2019安徽合肥期中)When I got the papers, I realized that things would be better if I listened to the teacher attentively. 在listened前加had解析：根据语境和主句中的谓语realized可知，if引导的条件状语从句所叙述的事情与过去的事实相反，应用虚拟语气，故if条件状语从句的谓语动词应用过去完成时。5(2019河北邯郸联考)When you walk into the gallery, you feel as if you are inside a fragile, white seashell. arewere解析：as if后接表语从句，根据句意“你感觉自己像是身处于一枚易碎的白色贝壳之内”可知，此处是对现在事实的虚拟，从句应用一般过去时。