Unit 2 Grammar and usage 完整讲解课件-2023-2024学年高中英语牛津译林版（2020）选择性必修第一册.pptxVIP

新译林2020版 选必一;;动词-ing形式作主语和宾语;概念 动词-ing形式是动词的一种非谓语形式，包括现在分词和动名词两种。;一. 动词-ing形式的时态和语态;______________ (wait) for his girlfriend, he walked around in a mysterious way. ______________ (wait) for his girlfriend for several hours, he finished a fantastic handicraft.;二、动词-ing形式作主语 动词-ing形式直接作主语表示抽象的概念，通常直接置于句首，谓语动词用单数形式。 e.g. Reading aloud is a good way in learning a language. 朗读是学习语言的一个好办法。 Getting up early is a good habit. 早起是一种好习惯。;2. 置于句末，用it作形式主语，多见于下面几个句型: It is worth doing... 做是值得的 It + be + a waste of time doing.. 做是浪费时间的 It is/was no good/use doing... 做是没有用的 e.g. 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。 It is no use crying over spilt milk. 覆水难收。;;Practice;三、动词-ing形式作宾语的用法 1.有些动词和动词短语后常用动词-ing形式作宾语。如: admit, appreciate, avoid, stand (忍受), miss, consider, delay, dislike, enjoy, imagine, escape, excuse, suggest, feel like, finish, forgive, mention, mind, practise, get down to, give up, devote...to, insist on, keep (on), look forward to, pay attention to, put off, stick to, be accustomed/used to (习惯于)…;2.在allow, advise, forbid, permit后直接跟动词-ing形式作宾语，如果有名词或代词作宾语，则构成 allow/advise/forbid/permit + e.g. They advise solving the problem in this way. 他们建议用这种方法解决这个问题。 We don’t allow anybody to smoke here. 我们不允许任何人在这儿吸烟。;3. 动词need，require，want意为“需要”时，后跟动词-ing形式的主动式或不定式的被动式作宾语，意义没有区别。 need/require/want doing = need/require/want to be done. e.g. The window needs/requires/wants cleaning/to be cleaned. 窗户需要擦了。 4. 在begin, start, continue, intend后用动词-ing形式和用不定式作宾语均可，意义没有多大区别。 begin/start/continue/intend to do/doing.;5. 有些动词，后接动词-ing形式作宾语，与用动词不定式作宾语意义大相径庭。 mean to do sth. 打算/意欲做 mean doing sth. 意味着 forget to do sth. 忘记去做 forget doing sth. 忘记曾经做过 go on to do sth. 完成某事后继续做另一件事 go on doing sth. 继续做原来的事;四、动词-ing形式的否定形式 动词-ing形式的否定形式通常是在其前加not，带有逻辑主语时not应放在逻辑主语和动词-ing形式之间。 e.g. You have no excuse for not going. 你没有理由不去。 He was punished for not having done his homework. 他因未完成作业而受到惩罚。;1. Living in good relationship