請(qǐng)往下看：

1.不定式做主語(yǔ)
(1)不定式的邏輯主語(yǔ)由引導(dǎo)詞來(lái)引導(dǎo)，這類引導(dǎo)詞最常見(jiàn)的是for 和of。這一類相應(yīng)的搭配有以下：absurd, bold, brave, courageous, careful, careless, clever, wise, foolish, silly, stupid, good, nice, kind, thoughtful, considerate, greedy, generous, honest, modest, polite, rude, cruel, selfish, lazy, wicked, wrong。如：
Doctors say that walking is one of the best methods for human beings to keep fit。醫(yī)生說(shuō)，走路幾乎是保持健康最好的方法。
It’s so considerate of to arrange the accommodation for us。
都幫我們安排了食宿，您真是考慮的太周到了。.
(2)不定式做主語(yǔ)補(bǔ)足語(yǔ)：
掌握常用不定式做主語(yǔ)補(bǔ)足語(yǔ)的句型。注意不定式表示的動(dòng)作發(fā)生的時(shí)間，并采用相應(yīng)形式。如：be said / reported / thought / believed / known / supposed + to do sth.例如：
You were warned not to read in the strong light，cause it will hurt your eyesight。不要在強(qiáng)光下看書，會(huì)傷害你的眼睛。
2.不定式做賓語(yǔ)
掌握要求接不定式做賓語(yǔ)的動(dòng)詞：
afford, arrange, attempt, claim, desire, determine, expect, fail, guarantee, endeavor, intend, pledge, pretend, resolve, request, swear, tend, venture。如：
I can’t afford to buy a house of my own now.我現(xiàn)在還買不起自己的房子。
3.不定式做定語(yǔ)
(1)被修飾的名詞前有序數(shù)詞、形容詞最高級(jí)或next, last, only, not a, the, very等限定詞時(shí)，該名詞用不定式做定語(yǔ)。如：
He is the last human being to see a live dinosaur 他是最后一個(gè)看到活恐龍的人（哈哈，小編插一句，這也太傳奇了）
(2)如果其動(dòng)詞要求不定式做賓語(yǔ)，相應(yīng)的名詞一般用不定式做定語(yǔ)。如：
decision to do→decide to do
He made decision to do the housework=he decided to do the housework.(他決定做家務(wù)了)
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