To go to school(主語)is his dream.上學是他的夢想。
To go to school and to stay away from his cruel father(并列主語)ale were what he expected-他期望能去上學,遠離他殘忍的父親。
2.跟在名詞后面作定語,如:
the ability to operate the machine操作機器的能力the first(second...1ast)people to speak第一個(第2個,…最后一個)發育的人
3.跟在be動詞的后面作表語,如:
What 1 want to do is to have a sightseeing(表語)around Be.jing.我想做的是在北京觀光旅行。
4.跟在及物動詞的后面作其賓語
I enjoy talking to you.(賓語)能和你談話我真高興。
They dont permit smoking(賓語)in the public places.他們不允許在公眾場合吸煙。
5.對賓語的性質,特征等進行補充說明,作賓語補足語,如:
We have persuaded him to accept our proposal.一(賓語補足語)我們已經說服他接受了我們的建議。
在使役動詞和感官動詞的后面常帶不to的不定式結構作賓語補足語:
have(let/make/feel/hear/watch/see/observe)sb.do sthhelp sb.do sth.
6.作狀語。不定式結構在句子中通常充當結果狀語和目的狀語。如:
He spent much time on his studies to be a top student.一(目的狀語)為了成為班上的優等生,他在學習上花了很多的時間He came there to find his friends had left.(結果狀語)他到了那里結果發現他的朋友已經走了。
7.作為主語補足語,補充說明主語的性質,特征等,如:
He is supposed to come here(主語補足語)tomorrow.他應該明天到這里。
He is said to have great talent for art.(主語補足語)據說他在藝術方面很有才華。
8.常接不定式作賓語的動詞:
agree,afford,aim,arrange,appear,ask,attempt,choose,claim,decide,desire,determine.expect,fail,guarantee,hope,endeavor,intend,long,mean,manage,offer,,plan,pledge,pretend,promise,proceed,prove,resolve,refuse,request,swear,tend,try,wait,wish
9.不定式的習慣用法:
句型:cannot choose but docanl help but