(
课件网) Non-finite verb To-infinitive 观察to do不定式在句中充当什么成分 It is not advisable to be early,as the host may not be ready. All you have to do is (to) select the photos of healthy food. Given that Neil Armstrong wanted to take a football to the Moon, we could even say it is the most popular sport out of the world How they use their bodies to pass, score and defend can be amazing to see. That football is such a simple game to play is perhaps the basis of its popularity. You don’t have to be a fan to recognise the skill of professional players. It is also a game that is very cheap to play. It is fun enough to attract millions of people. 主语 表语 宾语 宾语补足语 定语 目的状语 原因状语 结果状语 非谓语动词 概念: 非谓语动词是指_____ 可在句中充当除_____以外的其它句子成分，即_____。 它不随主语的人称和数而变化。 动名词，不定式，现在分词和过去分词 谓语 主语，表语，宾语，宾补，定语和状语 I want to go to the park tomorrow. It`s important for the figures to be updated regularly. I'm sorry to have kept you waiting. I’m honored to have been given the chance to stand here. She seems to be studying for her exams. to do的基本结构（时态＋语态） 主动形式 被动形式 否定形式 一般式 完成式 进行式 to do to be done not to do to have done to have been done not to have done to be doing \ not to be doing 1. 不定式作主语 考点：①不定式作主语表_____的动作,谓语动词都常用_____。 ②为了保持句子平衡，常采用 “it” 作形式主语。常用句型：_____。 adj是修饰的不定式则用_____ . adj修饰的不定式的逻辑主语则用_____. It’s important_____us to learn English well. It’s foolish_____him to do it again. To learn English well in Senior High is very significant. It is significant to learn English well in Senior High. To collect the related data is my work in the following weeks. 具体的，一次性动作或将来的 单数 It is adj of / for sb to do sth for of for of 2. 不定式作表语 考点：①不定式作主语表_____的动作,用来说明主语的内容，主语表语可互换。 ②不定式作表语，当主语部分出现动词do，其符号to可以省略。 My work in the following weeks is to collect the related data. All you have to do is (to) select the photos of healthy food. 具体的，一次性动作或将来的 What I want to do in college is _____ (improve) my English. (to) improve 3. 不定式作宾语 考点：①常用动词：agree, pretend, afford, decide, determine (be determined to do), demand, seek, attempt, hope, manage, refuse, plan, choose, tend, offer, aim, arrange, fail, happen, seem/appear, learn, dare ，intend, expect, ask, help (to) do, wish, want, need, require, prepare, promise, beg, desire, would like/love to等。 We hope to get there before dark. I am at a loss which to buy. I think it useful to master a foreign language. 3. 不定式作宾语 考点：②_____ 可作宾语。 ③_____句型。 ④特殊句型：have nothing to do but do / have no choice but to do We hope to get there before dark. I am at a loss which to buy. I think it useful to master a foreign language. 疑问词（what, which, where, when, how, ... ...
