动词不定式作主语作表语的知识网络总结 作主语 1. 谓语动词用第三人称单数。 To see one time is better than to hear a hundred times. 看一次比听一百次好。 2. it is + adj+ for/of sb to do sth;it is + a/an+n+ for/of sb to do sth;it +v+sb+n/adj+to do sth【it takes sb time/money to do sth】（it用做形式主语，避免头重脚轻） 注① or sb说明不定式的动作执行者;of sb说明某人具有的特性。 ② adj：kind/ nice/ foolish/ silly/ stupid/ rude/ cruel, wise/ clever/ brace/ selfish/ crazy/ good/ careful/impolite/right/wrong... n：pleasure/pity/shame/duty... v：find/think/consider/feel/make... It is not hard for one to do a bit of good.  一个人做一点好事并不难。 It’s kind of you to think so much of us.   你这么想我们真是太好了。 高三英语单词 人教版初中英语教材 高中英语人教版电子课本 作表语 1. 主语和表语都是不定式,含有条件结果。 To be kind to the enemy is to be cruel to the people. 对敌人仁慈就是对人民残酷。 “n（词组）/what从句+（特殊疑问词）to do sth”, 用来解释说明主语的内容，表示将来。 n. aim/duty/hope/idea/intention/mistake/plan/proposal/suggestion His plan is to spend a few days in the countryside.  他的计划是在乡村待上几天。 2. 主语有do 时，不定式省“to”. All we have to do is push the button.            我们所要做的就是按下按钮。 1. Boris has brains. In fact，I doubt whether anyone in the class has ________ IQ.   A. a high   B. a higher  C. the higher  D. the highest 2. —I was riding along the street and all of a sudden，a car cut in and knocked me down.    —You can never be ________ careful in the street.  A. much B. very C. so D. too 3.—You don’t look very ________. Are you ill?    —No，I’m just a bit tired.   A. good B. well C. strong D. healthy 4.Many students signed up for the ________ race in the sports meeting to be held next week.   A. 800-metre-long B. 800-metres-long  C. 800 meter length D. 800 meters length 5．After supper she would sit down by the fire，sometimes for ________ an hour，thinking of her young and happy days.   A. as long as B. as soon as    C. as much as D. as many as 6. According to the recent survey，cancer is the leading cause of death among young adults in this area, ________ women.   A. apparently B. especially C. exactly D. probably 7.The university claims that a（n）________ international student requires $12 000 to cover the cost of living in one academic year.   A. single B. only C. independent D. unique 8．The shopkeeper gave us ________ weight: we got 9 kilos instead of 10 kilos.   A. scarce B. short C. light D. slight 9．All the people ________ at the party were all his supporters.    A. present B. thankful C. interested D. important 10．I tried hard to get some information about the new technology out of his mouth，but he remained ___.    A. quiet B. silent C. secret D. calm