文档介绍：Unit 1 Living Well
Discovering useful structures
Revision of the Infinitive
动词不定式的作用 Functions of Infinitive
主语(subject)
宾语(object)
表语(predicative)
定语(attribute)
状语(adverbial)
宾补(plement)
1. Seeing is to believe.
To see is believing.
Seeing is believing.
To see is to believe.
×
√
√
×
3. All you have to do is (to) finish the job
quickly.
2. My job is to help the patients.
Ⅲ. 作表语
不定式常用在系动词 be, seem, appear, get,
remain等后作表语.
如果主语部分有个表示不定式内容的do,用作
表语的不定式可省略to
Ⅳ. 作定语(常常表示将来的动作)
1. 不定式做定语时常放在被修饰的名词或代词之后
She was very busy and had no time to
visit her friends.
Ladies and gentlemen ,I have something
important to tell you .
2. 当名词被the first ,the last, the only 等词以及
形容词最高级修饰时
eg: She is always the first e and the
last to leave.
①
②
4. 如果不定式是不及物动词,则后面需适当的介词
Please pass me some paper to write____.
She has a nice pen to write _____.
He bought a flat for the family to live ____.
5. Do you have a letter to send?
Do you have a letter to be sent?
你有信要我寄吗?
你有信要寄吗?
on
with
in
… to do和there be句型中。
There is no one to take care of her.
I have no jewelry to wear.
eg: He spoke loudly (so as / in order) to be
heard.
Ⅴ. 作状语
1. 表示目的: to / in order to / so as to
2. 表示原因
不定式可以用在作表语的形容词后作状语, sorry, surprised, happy, glad, eager, angry, foolish, right, wrong, slow, quick, rude, cruel, disappointed等。
eg: I’m glad/pleased to see you.
We were surprised to hear the news.
:
so + adj. / adv. + as to do…
such + adj. + n. +as to do…
adj. / adv.+ enough + to do
too + adv. / adj. +to do
③ We hurried to the station only to find the
train had left.
He was so foolish as to believe it.
= He was such a fool as to believe it.
= He was foolish enough to believe it.
I’m too tired to walk any further tonight.
①
②
Ⅵ. 作宾补
I didn’t ask you to pay for the meal.
They have warned us to be careful of rats.
不定式在下列动词后作宾语补足语时,要省略to
“感觉” feel
“听” hear, listen to
“使役动词”have, make, let
“看” see, look at, observe, watch, notic