Unit 2 Grammar and usage 知识清单学案-2021-2022学年高中英语牛津译林版（2020）必修第三册

非谓语动词to do（动词不定式） · 动词不定式（to do）会在句子中充当主语，表语，宾语，定语，原因状语，目的状语，结果状语。 不定式做主语 · 不定式作主语通常有两种结构：一种是把不定式to do直接放在句首的位置，另一种是把不定式放在句末，而在句首的主语位置用形式主语it来指代句末的不定式。 · To see is to believe. · It is important to keep a healthy lifestyle. 熟记以下句型（以下it均为形式主语，真正的主语由动词不定式充当）： · It is + adj. + to do sth. · It is + a/an + n (pleasure ,pity, crime, honor…) + to do sth · It is +adj.+ for sb. +to do sth. · It is +adj(表人品的)+ of sb.+ to do sth. · It took(sb) some time / courage/ wisdom… +to do sth. · It is no use/good /useful/ useless / a waste of time + doing sth. 熟能生巧 1. __________ is my dream _____________(travel) to the moon by spaceship. 2.It is an honor _________(get) the gold medal in the Olympics 3.It is necessary for us _______(be) constantly reminded of our shortcomings. 4. It is no good_____________(pretend) to know what you don’t know. 5.It took them five years ___________(build) the bridge. 6, 每天阅读是很有用的。 不定式做宾语 1. 跟在动词后作宾语 · 熟记以下单词： decide，determine，wish，plan，want，manage，try，afford，promise，arrange，desire，pretend，refuse，expect，hope，learn，offer，fail，agree，forget，prefer，... 2, 常用it作形式宾语，而真正的宾语是位于句尾的不定式，常见动词有think/consider/ find / feel / make /beilieve + it + adj / n + to do sth等, 构成V+ it +形容词/名词+ to do sth. 的结构。 · He finds it easy to solve the problem. 3, 在一些动词之后，可以在连接代词（what，who，which）或连接副词（how，when，where）及连词whether后面接一个带to的不定式，构成 疑问词+ to do sth. 的结构 · I wonder whether to go to the party. · They are considering what to do next. · Some who were famous in their own times would find it difficult to achieve success today. 小试牛刀 1.We agreed __________(meet) here but so far she hasn’t turned up yet. 2.Mr. Smith determined ________(go) to the cinema. 3.When his father came in , he pretended ________________(study). 4. I find it interesting ___________(learn) Maths. 5.He considered it his duty _________(care) about the homeless kids. 6.We think it necessary ____________(increase) the salary. 不定式做宾语补足语（不定式做宾补） · 常接不定式作宾补的词有： ask, encourage, fo