9A C1 动词不定式完整版.pptx

不定式;一、动词不定式的基本形式与构成: to + 动词原形;To finish the task in such a short time is really diff;It is + adj / n + for sb. to do sth.;It is+ adj +of sb.to do sth. =sb is+ adj +to do sth;2. 不定式作表语 主语是不定式(表示条件),表词也是不定式(表示结果) To see is to believe. To work means to earn a living. To be strict with students is to be responsible for the 主语是 aim, ambition, duty, dream, wish, choice, hope, idea, intention, job, work, plan, purpose thing 等抽象n或以其为中心的短语。 His dream / ambition / wish is to be a doctor. The only thing he could do is to tell the teacher the tr My work is to clean the blackboard every day. His aim is to study abroad in the near future. Your duty is to take good care of my grandparents. 若主语为what引导的名词性从句,不定式作表语对主语起补充说明作用。 What you need to do is to forget the unhappy experience;3.不定式作宾语 1)Vt + 不定式to do. 只能跟不定式的v有: afford, agree, aim, appear, choos decide, desire, determine, expect, fail, happen, hesi hope, intend, learn, long, manage, offer, pretend, promise, prepare, refuse, want, wish等。 He managed to solve the problem by himself. The stranger offered to show me the way. She pretended not to see me when I passed by. They decided to build a new plant in the northwest. 2)vt +疑问句+不定式 to do 常见的vt有:decide, discuss, forget, remember, find ou know, learn, see, understand, wonder等。 常用的疑问代(副)词有what, when, where, which, how, whether等，但不包括why。;He does not know when to start. We haven’t decided whether to continue or to stop. They are discuss where to have a picnic next week. I forgot which exercises to do. You must learn how to get along well with others 3）vt +间接宾语sb +疑问词+不定式 to do advise, show, teach, tell, inform I will show you how to deal with it. He told me which exercises to do. 4)动词+ it +补足语+不定式 to do find, think, consider, feel, make She considers it necessary to make friends with them. We should make it a rule to read English for half an hou everyday He find it difficult to finish all the homework before;4. 不定式作宾语补足语： 动词+宾语+不定式的结构.例如: ask, advise allow, beg, cause, challeng