(1)主干部分:末班车没来，我们走回家:the last bus has not come ,we went home on foot. 从半个小时过去了可以看出应该用过去时态。只好可以用had to(不得不)代替。
Half an hour had gone by, but the last bus had not come ,we had to went home on foot.
(2)主句:玛丽对考试很担心，她没背熟课文。可以用because来连接俩句话构成因果关系。看上去可用seem。可用一般现在时。 Marry seems to be very worried about the chanese exam because she has not learned the text by heart.
(3)主句:篮球赛被推迟，我们去参观博物馆。既然可用since引导，不妨:might as well 。已被推迟可看出用现在完成时。Since the basketball match has been postphone ,we might as well visit the museum.
(4)主句:他和他父母住在澳大利亚。 整个二次世界大战期间可看出应用一般过去时。He stayed in Australia with his parents all the way through World War II.
(5)主句:我与我的大学同学失去了联系。自从用Since 引导。从....毕业:gratuate from Since I gratuated from Nanjing Uniweisity in 1985, I have kand of lost touch woth my classmates.
护理八班 范祝丽 2019109252
