1、1. 動詞不定式動詞不定式的用法的用法 作主語作主語 作賓語作賓語 作定語作定語 作表語作表語 作賓補作賓補 作狀語作狀語動詞不定式動詞不定式2.動詞不定式的時態和語態動詞不定式的時態和語態3. 鞏固練習鞏固練習1. 動詞不定式作主語動詞不定式作主語動詞不定式作主語，謂語動詞用第三動詞不定式作主語，謂語動詞用第三人稱單數人稱單數。To get there by car will take a whole day.How to get enough money is still a question.1. 動詞不定式作主語動詞不定式作主語有時候為了保持句子平衡，常用有時候為了保持句子平衡，常用i

2、t作形式主語，放到句首，而將作真作形式主語，放到句首，而將作真實主語的動詞不定式放到句末。實主語的動詞不定式放到句末。It will take a whole day to get there by car.It is impossible for me to finish the work in a week.復合結構：復合結構：1)for sb. to do sth2) (It is +性格性格adj+)of sb. to do sth性格性格adj：nice, kind, cruel, thoughtful, careful, carelessIt is very important f

3、or us to learn English.It is difficult for him to finish the task in such a short time.It is very nice of you to help me.2. 動詞不定式作賓語動詞不定式作賓語動詞不定式作賓語常用于下列動詞后：動詞不定式作賓語常用于下列動詞后：want, agree, decide, manage, wish, hope, ask, like, love , choose, promise, continue, plan, learn, expect, offer, prepare, ref

4、use, pretend, attempt, intend, threaten, seek, hesitate, long, desire, fail等等等等。動詞不定式作賓語應注意的問題動詞不定式作賓語應注意的問題1.有些動詞后跟動詞不定式和動名詞有些動詞后跟動詞不定式和動名詞作賓語意義截然不同作賓語意義截然不同try, go on, stop, mean, regret, remember, forget等等try to do sth. 盡力去做某事盡力去做某事try doing sth. 試一試，試試看試一試，試試看Try knocking at the back door if nob

5、ody hears you at the front door.Try to get there on time.mean to do sth.打算做某事打算做某事mean doing sth.意味著做某事意味著做某事I wont wait if it means delaying a week.I meant to help you, but I was busy at that moment.forget to do sth. 忘了去做某事忘了去做某事forget doing sth.忘了做過某事忘了做過某事I forget telling her about itI forget to

6、bring the purse with me when I left home this morning.remember to do sth.記住去做某事記住去做某事remember doing sth.記得做過某事記得做過某事I remember reading the story in some book.Remember to post the letter for me when you go to the post office.動詞不定式作賓語應注意的問題動詞不定式作賓語應注意的問題2. 如果不定式作賓語而后面又有一個如果不定式作賓語而后面又有一個賓語補足語，這時要用賓語補足語

7、，這時要用it作形式賓語作形式賓語而把這個動詞不定式放到補語后。而把這個動詞不定式放到補語后。I feel it my duty to help you.I once thought it impossible for us to finish the job in such a limited time.3.動詞不定式作定語動詞不定式作定語動詞不定式作定語，它與所修飾的名動詞不定式作定語，它與所修飾的名詞或代詞可能是主謂關系，也可能是詞或代詞可能是主謂關系，也可能是動賓關系。如果是動賓關系，不定式動賓關系。如果是動賓關系，不定式主動表示被動。主動表示被動。He was the last on

8、e to leave school yesterday.We have much homework to do everyday.4.動詞不定式作表語動詞不定式作表語1主語和表語都是不定式（其含義主語和表語都是不定式（其含義往往一是條件，一是結果），如：往往一是條件，一是結果），如： To be kind to the enemy is to be cruel to the people. To do that would be to cut the foot to fit the shoe.2主語是以主語是以aim, duty, hope, idea, intention, mistake,

9、 plan, proposal, job, suggestion 等為中心詞的名詞詞組，或以等為中心詞的名詞詞組，或以 what 引導的名詞性從句表示，表語用不定引導的名詞性從句表示，表語用不定式說明其內容，如：式說明其內容，如： My idea is .My suggestion is . What I would suggest is . ：在某些句型中，當主語部分有動作：在某些句型中，當主語部分有動作動詞動詞時，作表語的不定式可以省略符時，作表語的不定式可以省略符號號 “”，如：，如： All we have to do is . The only thing I can do now

10、is . All I could do was . 5.動詞不定式作賓補動詞不定式作賓補常跟動詞不定式作賓補的動詞有：常跟動詞不定式作賓補的動詞有：（1）可接帶）可接帶to的不定式作賓補的動的不定式作賓補的動詞有：詞有：ask, get, allow, forbid, prefer, force, inspire, advise, cause, tell, order, warn, teach, permit, wish, invite, encourage等等（2）可跟省）可跟省to的動詞不定式作賓補的的動詞不定式作賓補的動詞有：動詞有：在部分感官動詞和使役動詞后，如：在部分感官動詞和使役動

11、詞后，如：see, watch, notice, observe, look at, listen to, feel, make, let, have注：注：help后可跟省后可跟省to或帶或帶to的不定式的不定式作賓補。作賓補。The teacher had us recite the text every day.I was let to do the experiment alone.Was he noticed to leave the house?動詞不定式在主動語態中用省動詞不定式在主動語態中用省to的形的形式作賓補，但在被動語態的句子中，式作賓補，但在被動語態的句子中，要用帶要用

12、帶to的形式作主語補語。的形式作主語補語。6.動詞不定式作狀語動詞不定式作狀語動詞不定式作狀語用來修飾動詞、動詞不定式作狀語用來修飾動詞、形容詞、副詞或整個句子，通常表形容詞、副詞或整個句子，通常表示目的、原因、結果、程度等。示目的、原因、結果、程度等。 They ran over .He stood up What have I said He came round Would you be so kind as to lend me your bicycle / tell me the time? Im not such a fool as to believe that. The boy

13、 is old enough to go to school. 當當too前有前有only時，時，only too to譯譯作肯定。作肯定。 I am only too pleased to help you.當不定式前有表否定意義的詞時，譯作當不定式前有表否定意義的詞時，譯作肯定?？隙?。We are never too old to learn.動詞不定式的時態動詞不定式的時態1. I opened the door to enter the room. 3. Mr. Smith is going to attend the meeting to be held tomorrow. 一般式一

14、般式( to do ).不定式的一般式所不定式的一般式所表示的動作（狀態）表示的動作（狀態）同時（或幾乎同時）同時（或幾乎同時）發生，或之后發生。發生，或之后發生。2.saw her enter the room.進行式進行式( to be doing)1. I am very glad to be working with you.2.He pretended to be reading when his mother came into his room.不定式的進行式表示正不定式的進行式表示正在進行的動作在進行的動作,和謂語動和謂語動詞所表示的動作同時進詞所表示的動作同時進行。行。動詞不

15、定式的時態動詞不定式的時態動詞不定式的時態動詞不定式的時態.完成式（完成式（to have done)1. I am sorry to have kept you waiting so long.2. You seemed to have read the novel written by Mr. Smith.不定式的完成不定式的完成式表示的動作式表示的動作在謂語表示的在謂語表示的動作之前發生。動作之前發生。鞏固練習1. Several of these washes and dryers are out of order and_. need to be repairingB. repair

16、ing is required of themC. require that they be repaired.D. need to be repaired.解析：and并列謂語動詞， need to be repaired相當于need repairing.D2. I wish you had brought your family with you. Ill get them _ next time. A. coming B. to come C. come D. have comeB解析：使役動詞get后跟帶to的動詞不定式作賓補，let，make, have后跟省to的動詞不定式作賓補

17、。3. We climbed to the top of the tower _a better view of the area. getting B. got C. having got D. to getD解析：動詞不定式作目的狀語，其余幾個沒這功能。4. What is the way Smith thought of _ enough money to buy the new house. A. getting B. having got C. being got D. to getD解析：名詞the way后跟有兩個定語，一個是定語從句Smith thought of， 一個是動詞

18、不定式to get enough money to buy the new house.5. The young assistant was noticed _ the bank alone last night. A. entering B. enter C. to enter D. enteredC解析：感官動詞后可跟現在分詞和省to的動詞不定式作賓補。不定式表示全過程，現在分詞表示正在進行。在被動語態中用帶to的動詞不定式作主語補語。6. Wang Dong wanted to surf the Internet, but his father told him _. A. not to do B. not do it C. do not to D. not toD解析：tell sb. (not) to do sth. 為了避免重復，后面省略了surf the Internet.7. The party was successful, but we thought it a pity no