文档介绍：关于动词不定式精品
第一页，本课件共有31页
动词不定式 的构成：
(not) to+do(动词原形)
第二页，本课件共有31页
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）
第三页，本课件共有31页
Ⅰ 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。
第四页，本课件共有31页
Say in another way, using ‘it’.
To learn from your friends is important.
To leave without saying goodbye is impolite.
To chat with Miss White is a pleasant thing.
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.
第五页，本课件共有31页
It is + adj. + for sb. to do…
≠ sb. is\are +adj. +to do…
It is + adj. + of sb. to do…
= sb. is\are +adj. +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…)
第六页，本课件共有31页
对他来说，说英语很容易。
对我们来说，努力学****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.
第七页，本课件共有31页
Ⅱ不定式放在be 动词后面，用作表语
My dream is to be a good teacher .
Its work is to clean the room every day.
第八页，本课件共有31页
Complete the following sentences.
doctor’s suggestion
is ______(take)more exercise.
best way is______(talk) to your parents.
plan is ______________________________ (今 年夏天 到北京旅游).
purpose is __________________________
(帮你解决这个问题).
to take
to talk
to travel to Beijing this summer
to help you solve this problem
第九页，本课件共有31页
Ⅲ不定式放在及物动词后，用作宾语
We begin to read English at 6:.
She forgot to close the door.
常用动词不定式作宾语的动词有：
want, plan, hope,wish, learn,
decide,would like, begin, start,
try,need, forget, choose,prepa