2016年江西成考专升本英语动词不定式归纳11

　　不定式的完成式、进行式和完成进行式：这三类在考研题中出现的频率很高，要特别注意不定式的这三种形式

　　1、如果不定式所表示的动作与主要谓语所表示的动作（状态）同时（或几乎同时）发生或发生在主要谓语之后，那么用不定式的一般形式

　　He received a warm welcome from the Australians and from his family who had flown there to meet him.

　　In 1967, he arrived back in England, where a quarter of a million people were waiting to welcome him.

　　After all, eighty was a special birthday, another decade lived or endured just as you chose to look at it.

　　Now suddenly she began to sob, holding herself in as if weeping were a disgrace.

　　2、如果不定式所表示的动作（状态）发生在主要谓语动词或特定的某时间之前,那么不定式就要用其完成式

　　She feels relaxed to have finished writing her thesis before the deadline.

　　33）The Vikings are believed America.

　　[A] to have discovered[B] in discovering[C] to discover[D] to have been discovered

　　34）The students were to at the auditorium before 1:30 pm, but the lecture was cancelled at the last minute.

　　[A] assembled [B] have assembled [C] assembling [D] be assembled

　　35）He was to the new ambassador, but he fell ill.