1.【2018天津卷】I cant find my purse. I_ it in the supermarket yesterday, but Im not sure. A.should leaveB.must have leftC.might leaveD.could have left【答案】D【解析】考查情态动词表推测和虚拟语气，以及could have done的应用。句意：我找不到我的钱包了，昨天我有可能把它落到超市了，但我不确定。根据句中时间状语yesterday可知，是对过去事情的推测，故用情态动词+ have done，再根据后句but Im not sure.可知，为不能肯定的推测，故用情态动词could，表示“可能”。故选D。2.【天津市耀华中学2018届高三上学期第一次月考】Pollution has reached high level in some urban areas, which is quite worrying.A. disturbingly B. slightly C. exactly D. flexibly【答案】A【解析】考查副词。句意：在一些城市，污染已经到了令人不安的程度，这是相当令人担忧的。根据后边which is quite worrying这是相当令人担忧的，可知前边污染已经达到了令人不安的程度。disturbingly令人不安地； slightly轻微地；exactly恰好地；flexibly灵活地。故选A。3.【天津市耀华中学2018届高三年级暑假验收考试英语】 George _too far. His coffee is still warm.A. must have gone B. might have goneC. cant have gone D. neednt have gone【答案】C【解析】考查情态动词表推测的用法。句意：乔治不可能走得太远。他的咖啡仍然是温的。cant have done一定不可能做了某事；must have done过去一定做了某事；might have done过去可能做了某事；neednt have done过去本不必做某事。故选C。4.【北京市石景山区2018届高三3月统一测试（一模）】The accident have been caused by a dog running across the road, but we dont know for sure.A. might B. should C. will D. must【答案】A【解析】考查情态动词表推测的用法。句意：事故可能是由一条横穿马路的狗引起的，但我们不确定。分析句子可知，本句是对过去动作的推测，而且是不太确定的推测。表对过去的推测有must(可能性大，“一定”)，might/may(可能性小，意为“可能，也许”)，这两词用于肯定句。对过去动作的推测要用情态动词+have done，故选A。5.【天津市河东区2018届高三第一次模拟】 It was warm and nice that evening. I stayed awake until eleven in order to have a good look at the moon by myself.A. on average B. on purpose C. on business D. on time【答案】B【解析】考查介词短语。on average平均； on purpose故意地； on business出差； on time按时，准时。句意：那天晚上天气又暖和又好。我故意坚持到十一点不睡觉就是为了好好地看月亮。表示目的，故选B。6.【2018年天津市十二重点中学高三毕业班联考】 Im not sure of the reason for the dogs illness, but it _ by eating too much.A. may have been caused B. need have been causedC. should have been caused D. must have been caused【答案】A【解析】考查情态动词表推测的用法。根据前句Im not sure of the reason for the dogs illness,我不能肯定狗生病的原因，可知这里为不肯定的推测，but表转折，暗示后文推测狗生病可能的原因，故用may have done过去可能做某事。句意：我不能肯定狗生病的原因，但它也许吃得太多了。故选A。7.【2018年天津市十二重点中学高三毕业班联考（一）】 My mother _ angry with me, but I couldnt shut my mouth before I shouted at her!A. wasnt B. wouldnt be C. wouldnt have been D. hadnt been【答案】C【解析】考查情态动词表推测的用法。句中wouldnt have done本来不会做某事。句意：我母亲本来不会对我生气的，但在我对她大叫之前，我不能闭上嘴！故选C。8.【徐州一中2018-2019学年第一学期高三年级阶段性检测（一）】The city of Vancouver in the Province of British Columbia also has superb scenery, a beautiful harbour, and all the comforts of modern life and international cuisine,_ being close to some very popular ski areas.A. in response to B. in addition to C. in terms of D. in preference to【答案】B【解析】考查短语辨析。句意：位于不列颠哥伦比亚省的温哥华市除了靠近一些非常受欢迎的滑雪区之外，还拥有极好的风景、美丽的海港，以及各种舒适的现代生活和国际美食。in response to对做出反应；in addition to除之外；in terms of根据，就而言，以为单位；in preference to优先于。分析句子可知，本句中是指“除了靠近一些非常受欢迎的滑雪区之外”,故选B项。9.【徐州一中2018-2019学年第一学期高三年级阶段性检测（一）】 _ the difference between the two findings is one of the worst mistakes youve made.A. Ignored B. Ignoring C. To ignoreD. Having ignored【答案】B【解析】考查非谓语动词作主语。设空处缺句子主语,且you和ignore之间表主动关系, 故用动名词主动形式做主语,故答案为B。10.【徐州一中2018-2019学年第一学期高三年级阶段性检测（一）】_ he was 12, Einstein had learned advanced mathematics by himself.A. The first time B. At the time C. By the time D. During the time【答案】C【解析】考查连词。The first time第一次的时候，At the time在那个时候，By the time到时候为止，During the time在那期间，四个选项BD不能做连词，A的意思不对。句意：到他12岁为止，爱因斯坦已经自学了高等数学。选C。A【2018江苏卷】Children as young as ten are becoming dependent on social media for their sense of self-worth, a major study warned.It found many youngsters(少年) now measure their status by how much public approval they get online, often through “likes”. Some change their behaviour in real life to improve their image on the web.The report into youngsters aged from 8 to 12 was carried out by Childrens Commissioner (专员) Anne Longfield. She said social media firms were exposing children to major emotional risks, with some youngsters starting secondary school ill-equipped to cope with the tremendous pressure they faced online.Some social apps were popular among the children even though they supposedly require users to be at least 13. The youngsters admitted planning trips around potential photo-opportunities and then messaging friendsand friends of friendsto demand “likes” for their online posts.The report found that youngsters felt their friendships could be at risk if they did not respond to social media posts quickly, and around the clock. Children aged 8 to 10 were “starting to feel happy” when others liked their posts. However, those in the 10 to 12 age group were “concerned with how many people like their posts”, suggesting a “ne