Unit 3 Fascinating ParksLearning About Language 动词 -ing 形式作主语一、动词 -ing 形式作主语1. 动词 -ing 形式作主语的功能及基本用法功能 : 动词 -ing 形式作主语时 , 多表示经常性、习惯性的动作 , 谓语动词多用单数形式。*Using cocaine increases the user’s heart rate and blood pressure. 使用可卡因会加快使用者的心率并使血压升高。*Wasting a person’s time is the same as killing him for his property. 浪费别人的时间无异于谋财害命。【易错精点】意义不同的两个动词 -ing 形式并列作主语时 , 谓语动词需用复数形式。*Listening to the English tapes and watching English films are good ways to learn English. 听英文磁带和看英文电影是学英语的好方法。2. 形式主语 it 代替动词 -ing 形式作主语*It is no use talking to him—he won’t listen. 跟他谈没有用——他不会听的。*It is a waste of time talking about such useless things. 谈论这些没用的事情是在浪费时间。【名师点津】(1)It is+adj. +doing sth. It is/feels funny doing sth. 做某事 ( 感觉 ) 很有趣It is useless doing sth. 做某事无用It is worthwhile doing sth. 做某事是值得的(2)It is a waste of+n. +doing sth. It’s a waste of time doing sth. 做某事是浪费时间(3)It is no+ n. +doing sth. It’s no good/no use/no fun doing sth. 做某事没好处 / 没用 / 没意思【即学活用】(1) 用所给动词的适当形式填空①(2019· 天津高考 )________ (learn) to think critically is an important skill today’s children will need for the future. ②______ (eat) too much fat is no good for your health. LearningEating③It’s a waste of time ______ (try) to persuade such a person. ④It is no use _______ (write) to him; he never answers letters. tryingwriting(2) 完成句子(2018· 北京高考 )_______________________________ an interesting and rewarding experience. 沿着古老的“丝绸之路”旅行是一次有趣、有意义的经历。Traveling along the old Silk Road is二、动词 -ing 形式的否定形式 动词...
