Unit 2 Healthy Lifestyle 学案（含解析）—高二英语人教版（2019）选择性必修第三册下学期期末复习

Unit 2 Healthy Lifestyle 学案（含答案）—高二英语人教版（2019）选择性必修第三册下学期期末复习 一、学习目标整合 1 learn some new words and expressions 2 have a further understanding of the unit 3 learn and master infinitive 二、思维导图回顾知识 三、重难知识易混易错 动词不定式(短语)作主语 动词不定式(短语)作主语时，一般表示具体的、个别的或具有将来意味的动作，作主语时，谓语动词通常用单数形式，具体用法如下： 1. 用作主语的动词不定式(短语)常出现在谓语动词之后，这时需在句首用形式主语It指代它。其句型有2种： (1)It+v.+宾语/表语(+ for sb.)+ to do sth. 当表语为名词或为描述动词不定式(短语)所表示的动作的特征的形容词时，用for引出动词不定式(短语)的逻辑主语。这类形容词有 difficult，easy，hard，important，interesting等。 例：It takes three generations to make a gentleman. 十年树木，百年树人。 (It+v.+名词短语+ to do sth.) It is hard task to break up long habit in a short time. 旧习难改。 (It+be+名词短语+ to do sth.) It was easy to imagine the danger ahead of them. 很容易想象他们前面的危险。 (It+be+形容词+ to do sth.) It is against my principles to do such a thing. 做这样的事违背我的原则。 (It+be+介词短语+ to do sth.) What a relief it is for us to succeed in our experiment at last! 我们的实验终于成功了，这对我们真是一个极大的安慰！ (it+be+名词短语+ for sb.+ to do sth.) It was hard for him to live on his small income. 依靠他那点工资维持生活很难。 (It+be+形容词+ for sb.+ to do sth.) (2)It+v.+表语+of sb.+ to do sth.(表语常为表示人的性格、品质的形容词，如good，kind，nice，foolish，polite，ever，careless等。) 例：It was careless of you to leave your umbrella on the train. 你真粗心，把伞忘在火车上。 2. 动词不定式(短语)作主语可位于句首。 例：To do this is to cut the foot to fit the shoe. 这样做是削足适履。 3."疑问词+动词不定式(短语)"结构 动词不定式(短语)可与疑问词when、where、how、what、which、who等组合，在句中作主语。 例：Where to hold the meeting is still unknown. 会议地点还未知。 How to solve the problem has not been decided yet. 如何解决这个问题还未决定。 练习： 1. It is difficult _____ (breathe) at these altitudes. 2. It is a good idea _____ (apply) what you have learnt to practice. 3. It was a mistake _____ (see) the arts as unnecessary, he added. 4. It is important _____ (take) a positive attitude to life when you are in trouble. 5. It is our duty _____ (conduct) rescue activities if necessary. 6. It is my lifelong ambition _____ (coach) a leading team. 7. It was great _____ (see) them again. 8. It's common for smartphones _____ (come) into contact with various forms of bacteria. 9. Hard as it is _____ (accept) that the scientist has passed away, his spirit will live on. 10. It's a great honour for me _____ (ask) to deliver a speech to everybody here. 答案： 1. to breathe 2. to apply 3. to see 4. to take 5. to conduct 6. to reach 7. to see 8. to come 9. to accept 10. to be asked 四、核心素养对接高考 1. In a study of 33 years of trends in Body Mass Index (体重指数) across 200 countries, the scientists found that people worldwide are getting heavier①_____ that most of ... ...