新编英语语法教程(第五册)13 Infinitives.pptVIP

Infinitive -- forms infinitive sign TEM-4 Exercises 1. It is not uncommon for there ____ problems of communication between the old and the young. A.being B.would be C.be D. to be 2. The Minister of Finance is believed ____ of imposing new taxes to raise extra revenue. A. that he is thinking B. to be thinking C. that he is to think D. to think 3. AIDS is said ___ the number-one killer of both men and women over the past few years in that region. A. being B. to be C. to have been D. having been 4. Professor Johnson is said ___some significant advance in his research in the past year. A. having made?? B. making???? C. to have made???? D.to make  5. The three men tried many times to sneak across??the border into the neighbouring country,??___ by the police each time. A. had been captured???? B. being always captured C. only to be captured?? D. unfortunately captured  1. Tense aspect of infinitive 时态\语态　　 主动　　　　　 被动 一般式　　　to do　　　　　 to be done 进行式　　 to be doing　　 完成式　　 to have done　 to have been done 完成进行式 to have been doing　 现在时：一般现在时表示的动词，有时与谓语动词表示的动作同时发生，有时发生在谓语动词的动作之后。 He seems to know this. I hope to see you again. = I hope that Ill see you again.　 2) 完成时：表示的动作发生在谓语动词表示的动作之前。 Im sorry to have given you so much trouble. He seems to have caught a cold. 3) 进行时： 表示动作正在进行，与谓语动词表示的动作同时发生。　He seems to be eating something. 4) 完成进行时： 　She is known to have been wreaking on the problem for many years. 2. to infinitive with verbs eg：　 The driver failed to see the other car in time. I happen to know the answer to your question.　　 2）verb+infinitive / verb+object+infinitive 　　　 eg：