中考英语一轮复习 动词不定式课件 牛津版 课件VIP免费

动词不定式 的构成：(not) to+do( 动词原形 )• A ‘to’-infinitive can be used as…主语（ Subject ）表语（ Predicative ）宾语（ Object ）宾补（ Object complement ）定语（ Attributive ）状语（ Adverbial ）ⅠⅠ 不定式用作主语不定式用作主语To grow trees is very important. It is very important to grow trees.不定式作主语时 , 往往放在谓语之后 , 用 it 作形式主语。Say in another way, using ‘it’.1.To learn from your friends is important.2.To leave without saying goodbye is impolite.3.To chat with Miss White is a pleasant thing.4.To walk to school takes me ten minutes.It is important to learn from your friends.It is impolite to leave without saying goodbye.It is a pleasant thing to chat with Miss White.It takes me ten minutes to walk to school. It is + It is + adj.adj. + + forfor sb. to sb. to do…≠ sb. is\are +sb. is\are +adj.adj. +to do… +to do… It is + It is + adj.adj. + + ofof sb. to do… sb. to do…= sb. is\are += sb. is\are +adj.adj. +to do… +to do…你那样做是有礼貌的。 It is polite of you to do that. = You are polite to do that. (good, kind, nice, rude, clever, right, silly, thoughtful, brave, selfish…) (easy, hard, difficult, important, possible, necessary…) 对他来说，说英语很容易。 对我们来说，努力学习是必 要的。 您能帮助我，真是太好了。 It is easy for him to speak English.It is necessary for us to study hard. It is very kind of you to help me.Ⅱ 不定式放在不定式放在 be 动词后面，动词后面，用作用作表语表语• My dream is to be a good teacher .• Its work is to clean the room every day.Complete the following sentences.1.The doctor’s suggestion is ______(take)more exercise.2.The best way is______(talk) to your parents.3.His plan is ______________________________ ( 今 年夏天 到北京旅游 ).4.My purpose is __...