1、动词不定式的基本方式是“to +动词原形”，有时能够不带 to 。不定式表明将来的动作。动词不定式首要考察两个方面：不定式的句法功用（即作何种成分）；某些固定句型。
1）有一些动词后用作宾语补足语的不定式一般不带to。这种动词有两类：一是感官动词，如see, hear, watch, notice等。如：
I saw him come.
I heard him sing.
另一类是某些奴役动词，如make, have, let等。如：Let him go.
They made the children work 12 hours a day.
My parents often help me (to) do my homework.
The student has decided to go to school and ask his teacher for help.
I came not to scold you, but to praise you.
It is better to die on one's knees than to live on one's knees.
They decided to begin the experiment at once.
I'm looking forward to hearing from you.
1、在神态动词如can，may，must, might, could或助动词如will，shall, would, shoul猎豹q6d 等后，动词用原形。
You must wait here till they come back.
They will hold&n优彩网彩票官网app-1-A-1英语：高中英语基础知识大盘点（八）bsp;a meeting next week.
2、在had better、would rather、may/might as well，等调配之后，动词不定式也不带to。
If you'd rather be alone, we'll all leave here.
You might as well go without her.
be about to do…正要做……
be likely to do…可能做……
be supposed to do…应该做……
have (got) to do…不得不做……
used to do…曩昔常常做……
would/should like to do…乐意/想做……
You ought to be more careful if you want to pass the examination.
There used to be a cinema here before the war.
Hurry up, or you will be late.
She did send you a letter last week.
Only then did I begin my work.
1、As a kid, I loved to watch cartoons, but no matter how many times I
asked to watching them, my parents would not to let me.（两处过错）
2、Some of us were confident and eager take part in the class
activity;others were nervous and anxious.（2018全国卷3短文改错）
3、You don’t have to run fast or for long _____(see) the benefit.
4、To avoid knee pain, you can run on soft surfaces, do exercises to
_____ (strength) your leg muscles (肌肉), avoid hills and get good
5、The government encourages farmers to grow corn instead of rice
_____ (improve)water quality.（2018全国卷2语法填空）
6、Once his message was delivered, he allowed me _____(stay) and
7、While regularly eating out seems to _____ (become) common for
many young people in recent years, it’s not without a cost.
8、I was afraid that to speak in front of a larger group of people.
1、Besides,they often get some useful information from
the internet. When summer comes, they will invite their
students pick the vegetables！（2017全国卷2短文改错）
2、 We can chose between staying at home and taking a
3、The优彩网彩票官网app-1-A-1英语：高中英语基础知识大盘点（八） air we breathe in is getting dirtier and dirtier.Many rare animals
are dying out. We must found ways to protect our environment.
4.Wecan lie on the grass for a rest , or sat by the lake listening to
5.Fat and salt are very important parts of a diet. They are
required_____(process) the food that we eat, to recover from injury
and for several other bodily functions. (2017全国卷1语法填空)
6.But Sarah, who has taken part in shows along with top
models,wants_____ (prove) that she has brains as well as beauty.
7.Skilled workers also combine various hardwoods and metal ___
(create) special designs.(2016全国卷3语法填空)
8.If you find something you love doing outside of the office, you’ll be less likely ___(bring)your work home. (2016全国卷2语法填空)
9.When a new day breaks, the walls have given up their heat and
are now cold enough ______(cool) the house during the hot day.
10、I heard a passenger behind me shouting to the driver ,
but he refused ______ (stop ) until we reached the next stop.
11.It took years of work _____(reduce ) the industrial
pollution and clean the water.(2014全国卷1语法填空)
12.It could beanything-gardening, cooking, music, sports—but
whatever it is, 70 (make) sure it’s a relief from daily stress rather
than another thing to worry about. (2016全国卷2语法填空)
13.Since the plants took a while to grow, he started cutting down
trees ______ (sell)the wood.（语法填空)
14.I got on the bus and found a seat near the back, and then I noticed
aman_____(sit) at the front.（语法填空)
15.He has a constant urge_______（check）for next messages; he
checks his phone every five minutes!（语法填空)
16.Every individual is a member of a group called the community,
and it is the duty of e优彩网彩票官网app-1-A-1英语：高中英语基础知识大盘点（八）very citizen _____ask what he can do for his
17.A lack of confidencecan _____（lead）a lot of suffering.（语法填空)
18.It was very kind of them to meet me at the railway station and dr优彩网彩票官网app-1-A-1英语：高中英语基础知识大盘点（八）ove
me to their home.（短文改错）
19.He would ask who we was and pretend not to knowing us.
20.The position of the classroom with its view made me felt like I was
1）I went backto get David and helped him to stood up.
2）The World Health Organization and other organizations are working
improve health all overthe world.
3）This medicine will make you to feel better. Please take it three times a day.
4）I decided walk around a little before accepting I'd have to spend the night in a car.
5）I'd like very much come but I have an examination on Monday morning.
6）But then there are always more mysteries look into.
7）My parents love me dearly of course and will do all they can make sure that I get a good education.
8）Jack would fly away and bring it back for us throw again.
9）Let you to know when the book you want has been returned .
1）David and Idid not agree and David pointed to a path which it he thought would probably leading to a village.
2）He told me that I'd probably had a heart attack.
3）You h优彩网彩票官网app-1-A-1英语：高中英语基础知识大盘点（八）ad better not to miss seeing so good a film; it is one of the best film I've ever seen.
1、Since the plants took a while to grow, he started cutting down trees
______ (sell) the wood.
句中已有谓语动词started ，而空前有没有连词，因而应该填非谓语动词to sell表明意图。
2、The building _____(build) next year will be our lab building.
句中的will be是整句的谓语，所以横线地点的动词应当用作非谓语。从next year能够看出，是“将来”作的，故用不定式；且大楼是build动作的接受者，故能够判别出横线地点处用build的不定式被迫式to be built。
3、She wished that he was as easy_____ (please) as her mother, who
was always delighted with perfume.
在句型“be+形容词+to do”中，不定式润饰形容词表明原因，而且习惯上用自动方式表达被迫意义，故填to please。
4、The hall was dark when I came in; the show was about_____ (begin).
本题考察固定调配be about to sth（正要着某事）。故填to begin。
5、If the answer to all those questions is yes, you had
better______(control ) your stress.
6、If the total stress in your life is over 150, you are twice as likely
_______ (get )ill.
be likely to do sth归于固定调配，意思是“可能做……”，故填to get。
7、______(earn) some money to pay the daily expenses, I started work in a local caf as a waiter.
8、It's time for us_____(have) classes.
本题考察固定句型It's time for sb todo sth。对或人而言该做……，故填to have。
1、watching→ watch ，去掉let前的to
2、eager后加to 3、tosee 4、strengthen
5、to improve 6、tostay 7、havebecome
3、found→find 4、sat→ sit 5、toimprove
6、toprove 7、to create 8、tobring 9、to cool
10、tostop 11、to reduce12、make 13、tosell
14、sit/sitting 15、to check 16、to17、lead
18、drove →drive 19、knowing →know