To + v. … +v.
When (疑问副词) + to +v.+ … +v.
For sb. to +v.
① To persevere means victory.
② When to start remains undecided.
③ For us to be red and expert is not only necessary but also possible.
1.It is + n. + to + v.
2.It takes sb. time to + v.
3.It is + adj. + for/of sb.+ to + v.
① It is our duty to support their struggle for liberation.
② It only took us a year to finish the work.
③ It is hard for me to master English.
① Reading is an art.
② Seeing is believing.
It’s no good …, no use …, useless… +doing
It’s a good pleasure… +doing
It’s a waste of time… +doing
① It’s no use arguing about the point.
② It’s no good waiting here,let’s walk home.
③ It’s a waste of time arguing about it.
There is no + doing.
① There is no telling what he is going to do.
② There is no knowing what may happen.
① To +v. + is + to +v. (一是条件一是结果)
② pron/n. +is/seem+to+v.(包括不定式完成式或被动态)
③ What-clause +is +to+v.(表语说明主要内容)
① To do two things at a time is to do neither.
② She seemed to have heard about it already.
③ What i would suggest is to start work at once.
e.g. Our work is serving the people.
① The present situation is encouraging.
② We are all pleased.
③ She looked disappointed.
①主 + 谓 + 宾 + to + v.(主被动)
②主 + 谓 + 宾 + to + v. + prep.
③There is /are + n. + to + v.
① Do you have anything more to say?
② Have you anything to be taken to your mother?
③ She’s a lot of pens to write with.
④ There is no time to lose (to be lost).
⑤ These are some difficulties to overcome(to be overcome).
① All moving bodies have energy.
② Electricity remains the widely used form of energy in industry.
③ Here is a letter announcing his arrival.
④ This is a book written by a peasant.
⑤ He is a man respected by all.
The question discussed is of great importance.
The question being discussed is of great importance.
The question to be discussed tomorrow is of great importance.
主+谓+to+v.(要求不定式作宾语的V.有 agree ask choose decide demand expect hope learn manage prepare promise refuse want wish ,etc.)
The workers think it necessary to increase product.
主 + 谓 + 疑问pron. / 疑问adv. + to + v.
I dont know what to do/ where to go/whom to ask/when to sleep/how to get there/which one to buy/whether to laugh or cry.
Prep. but / except / besides + to v./ v.
① He desired nothing but to succeed.
② He did nothing but cry.He couldn’t choose help but cry.
③ That afternoon I had nothing to do besides answer.
① 主+谓+doing. 要求动名词作宾语的V.
② have difficulty / trouble/ fun/ a hard/good time (in) doing.
③ feel like +n./dong. 好像想要
① It feels like rain.( It feels like raining(X))
② I dont feel like going to the movies.
Have ,make ,let ,see ,hear ,feel ,notice ,observe ,watch ,listen to ,look at
① Make foreign things serve China.
② Its quite amusing to look at other people play chess.
They were made to work day and night.
1.see, hear, feel, smell, watch, find, notice, observe, look at,
2.have, set, keep, get, catch, need, leave, send,致使
① Can you smell anything burning?
② They find the lost child hiding in the cave.
③ I wont have you doing that.
④ With the words he set all of us laughing.
⑤ You wont watch me doing that again.
⑥ His remarks left me wondering about his real purpose.
⑦ We must get the machine going/repaired soon.
⑧ I found my hometown almost completely rebuilt.
主+谓+…，to+v.…（so as to ,in order to）
① To get the best results,use clean water.
② He went home to see his mother.
③ I turned the radio down so as to no to disturb you.
④ We go to school in order to get knowledge.
be + adj. + to + v.
be + 过分 + to + v.
V. + to + v.
① I m very glad to see you.
② I was surprised to see her there.
③ She wept to hear the news.
1.only to + v.
2.Adj./adv.+ enough + (for +o.) + to + v.
3.too + adj./adv. + to + v.
4.So + adj. + as + to + v.
① He worked hard only to fail again.
② She is old enough to retire.
③ The room is large enough for us five to sleep in.
④ I m too tired to work any more.
⑤ Would you be so kind as to lend me your bicycle?
① The question is impossible to answer.
② English is difficult to learn.
③ The room is comfortable to live in.
① Walking along the street yesterday,i met a friend of mine.
② Seen from space ,our earth looks like a blue blanket.
③ Not hearing from her parents,she is in low spirits.
④ Studying hard,you will pass the entrance exam.
⑤ Weighing three hundred pounds,the piano is not too heavy for me move.(让步)
⑥ The train starts at six,arriving at seven.
① When used,energy is often changed from one into another.
② While working in the factory,we learned much from the workers.
1、Swimming is his favourite sport.（Swimming充当主语）
2、He enjoys swimming. （Swimming充当宾语）
3、I found him swimming in the river. （短语Swimming in the river充当宾补）
4、His favourite sport is swimming.（Swimming充当表语）
5、He is the man swimming in the river just now. （短语Swimming in the river just now充当定语）
6、 Swimming in Summer ，we can get cool.（短语Swimming in Summer充当状语）
to do 在句子中充当成分
1、To see you is glad.（to see充当主语）
2、I want to see you.（短语to see you充当宾语）
3、.I want him to see you. （短语to see you充当宾补）
4、My hope is to see you.（短语to see you充当表语）
5、He is the man to see you.（短语to see you充当定语）
6、I’m glad to see you.（短语to see you充当状语）
1、I heard the song sung in English .（短语sung in English充当宾补 ）我听到这首歌被用英语唱。
2、Seen from the top of the tower, the factory looks beautiful.（短语Seen from the top of the tower充当状语）被从塔顶上看，这个工厂看起来漂亮。
3、This is the question discussed yesterday（短语discussed yesterday充当定语）这就是昨天被讨论的问题。