Unit 1 Discover Useful Structures 学案-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Unit 1 Art Discovering useful structures Learning objectives: At the end of this lesson, students are able to: 1.discover and summarize the pragmatic features and functional meaning of infinitives as the predicative; 2.realize language output by correctly using the grammatical structure of infinitives. 不定式的形式 主动形式 被动形式 一般式 to do to be done 进行式 to be doing — 完成式 to have done to have been done 完成进行式 to have been doing — I. Read these sentences and fill in the blanks using the correct words from the text.(E1) II. Observe and Discover. 1. 结构 动词不定式可以放在 be和 become, sound, taste 等____________后面作表语，由“(to) +动词原形”构成。 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。 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。 有时，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. 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。 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。 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。 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。 ⑨ Who is __________________ the fire? 谁应为这场大火承担责任？ ⑩ The house is ________________________________________________