Our headmaster graduated from Tsinghua University in 1968.

　　(2)他是哈佛大学毕业生。

　　He is a graduate of Harvard.

　　(3)By the time Jack returned home from England, his son ________ from college.

　　A．graduated B．has graduated

　　C．had been graduating D．had graduated

　　答案　D

　　解析　句意：到杰克从英国回家的时候，他的儿子已经大学毕业了。return所表示的动作发生在过去，graduate所表示的动作发生在他回家之前，是"过去的过去"，所以用过去完成时态。

　　3．develop vi.& vt.养成，培养；发展，生长；开发；冲洗(胶卷)；患(病)；出现(问题)

　　[语境感悟]

　　(1)(教材P9)In China he developed an interest in teaching English to Chinese students.

　　在中国，他对教中国学生学英语产生了兴趣。

　　(2)She died two years after first developing the illness.

　　她患这种病两年后便去世了。

　　(3)I'd like to have these films developed here.

　　我想在这儿冲洗胶卷。

　　(4)He has developed the habit of making notes while reading.

　　他养成了读书时记笔记的习惯。

　　[归纳拓展]

　　(1)develop the habit of doing sth养成做某事的习惯

　　(2)developing adj.发展中的

　　developed adj.发达的

　　developing countries发展中国家

　　developed countries发达国家

　　(3)with the development of...随着......的发展

　　[即时跟踪]

　　(1)植物由种子发育而成。

　　Plants develop from seeds.

　　(2)One of the best ways for people to keep fit is to ________ healthy eating habits.

　　A．develop B．grow

　　C．increase D．raise

　　答案　A

解析　句意：人们保持健康的最佳途径之一就是培养健康的饮食习惯。所填动词与habit构成搭配