Unit 1 Art Discover Useful Structures 动词不定式作表语导学案-2023-2024学年高中英语人教版（2019）选择性必修第三册

To do 做表语的基本用法 一．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 — 二．动词不定式作表语基本用法。 动词不定式可以放在 be/seem /remain等____________后面作表语，由to+动词原形 构成。系动词 表将要做某事。 （1） Be to do The next step is (make) sure that you know what is needed. This year, his plan is (make) some changes in the teaching method. The purpose of education is (develop) a fine personality in children. Her dream is (become) a movie star. His goal is ______________(admit) into Peking University this summer. to make/to make/to develop/to become/to be admitted 主语是以 difficulty, experience, habit, job, method, principle, problem, reason, risk, role, task, thing, wish, aim, suggestion, duty, hope, idea, intention, plan, purpose, way 等为中心的名词词组时，或者以 what引导的名词性从句 表示时，一般用动词不定式作表语说明主语的内容。 （2） 有时，在作表语的不定式前，还可添加疑问代词或疑问副词如 what to do, who to do , how to do, when to do, where to do, why to do whether to do等。 The problem was how to begin Our difficulty is where to find a guide. It’s important for us to know how _____ (apply) what we have learned in class to practice. to apply （3） 特殊句型 主语＋be +adj+to do （此处 to do不是作表语） This house is comfortable to live in./English is easy to learn。 三．单句语法填空并标注充当的成分。 1) Having a trip abroad is certainly good for the old couple, but it remains ___________(see) whether they will enjoy it. to be seen. 表语 2) （2022年全国甲卷）A visually-challenged man from Beijing recently hiked (徒步) 40 days to Xi’an, as a first step ________ (journey) the Belt and Road route (路线) by foot.to journey定语 3) (2021年北京卷)Much of this increase can be due to climate change. The findings show a critical need ________ (invest) in disaster prevention. to invest 定语 4) (2021全国乙卷)Accommodations aim ___________(have) a low impact on the natural environment. to have 宾语 5) What I suggest is _______ (start) work at once.to start表语 6) (2022.6全国乙卷 语法填空) ________ (strengt