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1、主語賓語表語定語狀語補語不定式V-ingV-ed主動語態(tài)被動語態(tài)一般式To doTo be done進行式To be doing完成式To have doneTo have been done完成進行式 To have been doing不定式有時態(tài)和語態(tài)的變化To finish such an essay in one week is beyond his ability.To live is to do something worthwhile.To listen closely and reply well is the highest perfection in the art of

2、 conversation.不定式作主語不定式作主語It is important to learn the right habits at an early age.its a great regret to have made such a mistake.Its a great honor for us to be present at the partyIts nice of you to think so much of us.不定式作主語，可以放在句首，也可以用 it 作形式主語，將真正主語不定式 放在句末不定式作賓語不定式作賓語We agreed to meet here but

3、 so far she hasnt turned up yet.He cant afford to buy a car.He pretended not to have seen me.I wanted to have dropped her a line, but forgot to do so. (不定式后用完成時表示沒有實現的動作)四個希望三答應(hope, wish, expect, long, agree, promise, undertake) 五個想要巧安排(intend, plan, want, mean, desire, arrange) 設法學會做決定(manage, le

4、arn, decide, determine) 企圖假裝要選擇(attempt, pretend, choose) 提供要求勿拒絕(offer, demand, refuse) 威脅準備不失敗(threaten, prepare, fail)We thought it better to start early.They consider it important to get his permission動詞不定式作賓語時放在句中動詞不定式作賓語時放在句中,也可以用也可以用 it 作形式賓語作形式賓語,真正的賓語動詞不定式放真正的賓語動詞不定式放在句末在句末. The next step i

5、s to make sure that you know exactly what is required.The important thing in life is to have a great aim, and the determination to attain it.不定式作表語We need someone to help him with the typing.I have a lot of work to do.I havent got a chair to sit on.不定式作定語1.不定式表目的To do a good job, we must have the ri

6、ght ways.Ill write down his telephone number in order to call him later.不定式作狀語2.不定式表結果He left, never to return. She was not old enough to understand all that.3. 不定式表原因We shall be very happy to co-operate with you in the project.All of us were shocked to hear the sad news.1.帶to的不定式作賓補He commanded the soldiers to be silent.I rely on you to finish the work today.2.不帶to的不定式作賓補I must have someone show me the way.He felt his hands tremble.不定式作賓補To tell you the truth, this is all Greek to me.To make the matter worse, it began to rain.不定式作插入語