2017届英语高三二轮复习：第一板块第5讲课下作业—介词与连词

　　1．(2011·重庆师大附中第一次月考)To save the drowning child, the boy plunged into the icy water without hesitation，________his own safety.

　　A. despite of

　　B. regardless of

　　C. unaware of

　　D. because of

　　解析　考查由介词of构成的短语。despite of“尽管，虽然”；regardless of“不管，不顾”；unaware of“没意识到”；because of“因为，由于”。根据句子意思可知选B。

　　答案　B

　　2. They promise that the work would all be finished________next week.

　　A. until

　　B. in

　　C. by

　　D. to

　　解析　by 意为“最迟到……之前，到……的时候已经”。类例地，下面一题也选by：

　　The train leaves at 6：00 p．m. So I have to be at the station________5：40 p．m. at the latest.

　　A. until B. after

　　C. around

　　D. by

　　答案　C

　　3．________reading the letter, what has he done?

　　A. Because of

　　B. Except

　　C. Besides

　　D. But for

　　解析　besides 意为“除……之外，还”。又如：

　　He has another car besides this. 除了这辆车外，他还有一辆。

　　Besides being a teacher, he was a poet. 除了是位教师外，他还是位诗人。