Unit 1 Discover Useful Structures 动词不定式作表语课件-2022-2023学年高中英语人教版（2019）选择性必修第三册

选择性必修三英语 unit1 语法课件 1. 结构 动词不定式可以放在be, become, sound, taste等_后面作表语。 2. 功能 ① Perhaps _ the development of Western painting over the centuries. 也许,了解西方艺术的最好方法就是回顾若干个世纪以来西方绘画的发展。 ② _ your father for his opinion. 我的建议是问问你父亲的意见。 Infinitives as the predicative 系动词 the best way to understand Western art is to look at What I would suggest is to ask Discover and Find Infinitives as the predicative 动词不定式作表语 Tip 1:主语是以 _ _ _ 等为中心的名词词组时,或者以 _表示时,一般用动词不定式作表语说明主语的内容。 difficulty, experience, habit, job, method, principle, problem, reason, risk, role, task, thing, wish, aim, suggestion, duty, hope, idea, intention, plan, purpose, way advice, ambition, custom, challenge, business, desire, 有时,根据表达的需要,在作表语的不定式前,还可添加疑问代词或疑问副词,包括what, who, how, when, where等。 例如:The problem was how to begin. what引导的名词性从句 Discover and Find ③ All he wanted was _. 他只想一个人待着。 ④ The least I can do to help is _. 我所能帮的最起码的事是借给她一辆车。 Infinitives as the predicative Tip 2:当主语包含定语从句且其先行词为代词 _ 或者主语被_ 或形容词 _ 修饰时,其后可接“系动词+不定式”作句子的表语。 to be left alone to lend her a car all only, first, one, least 最高级 Discover and Find Infinitives as the predicative ⑤ The regulations are _. = The regulations must be observed. ⑥ You are _. = You should be rewarded. Tip 3:动词不定式作表语可用于被动语态,相当于_,具有情态意义。 to be observed to be rewarded can / could, should, ought to, must Discover and Find Infinitives as the predicative ⑦ You must be patient and persistent if you are _. (愿望) 如果你想成功,你必须有耐心和恒心。 ⑧ You are _ a face-to-face talk with them. (劝告) 你必须得和他们进行一次面对面的谈话。 Tip 4: 动词不定式作表语可表示“_ _”等。 意愿、禁止、预期的结果 to succeed to have Discover and Find 同意、安排、命令、决定、劝告、愿望、 Infinitives as the predicative ⑨ Who is _ the fire? 谁应为这场大火承担责任? ⑩ The house is _. 此房出租。 Tip 5:某些动词不定式(短语)作表语时,需用主动形式表示_。 to blame for to let 被动意义 Discover and Find Infinitives as the predicative 1. 我们需要做的就是怀有希望过好每一天。 _ 2. 他们试图做的是引起公众关注。 _ 3. 晚上他做过的唯一的事是读报纸。_ 动词不定式作表语省略to的情况 All we need to do is live each day with hope. What they attempted to do was draw public attention. In the evening the only thin