Unit 5 Learning from nature Period Ⅱ Using language—Grammar & Integrated skills 课件（共76张）+学案

英语　选择性必修 第三册 WY Period Ⅱ　Using language—Grammar & Integrated skills Grammar (动词不定式复习(1)———作主语、宾语和表语) ①To do morning exercise is useful for our health. ②Pop art aimed to show ordinary twentieth－century city life. ③Instead, a picture should attempt to show the “life” of its subject. ④My ambition is to work for a firm that develops computer software when I grow up. ⑤To complete the 30－story building in one year was quite a difficult task. ⑥My prime concern is to protect my property. (1)例句①⑤中的动词不定式作_____。 (2)例句②③中的动词不定式作_____。 (3)例句④⑥中的动词不定式作_____。 答案：(1)主语　(2)宾语　(3)表语 一、动词不定式作主语 1.不定式作主语表示具体的、一次性的、将来的动作或一般情况。作主语的不定式有时态和语态的变化；且谓语动词通常用单数。 To hesitate means failure. 犹豫不决就意味着失败。 To know everything is to know nothing. 样样皆通，样样稀松。 To smoke so much is not very good for you. 抽这么多烟对你身体不太好。 2．有时候为了保持句子平衡，也可以用it作形式主语，而将作主语的动词不定式(短语)后置。 It is our duty to give as much help as possible. 提供尽可能多的帮助是我们的职责。 名师点津 不定式的复合结构由“for/of sb to do”构成，sb是不定式动作的发出者，为不定式的逻辑主语。若形容词描述事物，用for；若形容词描述不定式行为者的性格或品质，用of。 It's difficult for us to finish the work. 对我们来说，完成这项工作是困难的。 It's clever of you to work out the maths problem. 你真聪明，解出了这道数学题。 (1)单句语法填空 ①_____ (stop) the work now seems already impossible. ②_____ (finish) the work in ten minutes is very hard. ③It was foolish of you _____ (give) up what you rightly owned. 答案：①To stop　②To finish　③to give (2)选词填空(for/of) ①It is so kind _____ you to do me such a good favour. ②I don't think it right _____ you to say so absurd a requirement. 答案：①of　②for (3)句型转换 To give up smoking is right. →_____ smoking. 答案：It is right to give up 二、动词不定式作宾语 1．不定式作宾语时，往往跟在某些及物动词后面，常见的有： agree (同意), offer (提出), intend/plan (打算，计划), demand (要求), promise (答应), help (帮忙), prepare (准备), decide (决定), refuse (拒绝), choose (选择), wish/hope/want/expect (希望，想要), fail (失败), pretend (假装), manage (设法), determine (决心), beg (恳求，祈求), arrange (安排，准备), threaten (威胁), claim (声称), aim (以……为目标), hesitate (犹豫不决)等。 We agreed to meet here but so far she hasn't turned up yet. 我们约好在此地见面，但是她到现在还没有露面。 They managed to finish the work on time. 他们成功按时完成了工作。 名师点津 歌诀巧记常接动词不定式作宾语的动词： 同意提出作计划，要求答应来帮忙。 准备决定遭拒绝，敢于选择有希望。 不能做到莫假装，设法做成决心强。 恳求安排又威胁，声称目标不犹豫。 2．“疑问词＋不定式”结构作宾语 “疑问词(who, which, when, where, how, what等)＋不定式”结构在句中起名词的作用，可充当主语、表语、宾语。 这类动词有： teach, remember, forget, decide, wonder, show, learn, consider, know等。 He taught me how to cook. 他教我如 ... ...