[名师点津]　在abandon oneself to"沉溺于......"短语中，to为介词，其后可跟名词、代词或动名词。

　　(2)n.放纵；放任

　　with abandon　　　　　　　放任地

　　④The kids are playing jokes with_abandon．

　　孩子们任意地开着玩笑。

　　3．(教材P41)He was likely to be very upset, since I was supposed to meet him at the library.

　　他可能很不高兴，因为我本应该在图书馆和他见面的。

　　★be supposed to被期望，理应/必须，被认为

　　①Earth Day is supposed to be a day when every person promises to do something to help take care of our world.

　　地球日就是理应每一个人在那一天都要承诺做一些事情来帮助关爱我们的世界。

　　②He was supposed to be one of the most popular singers.

　　他被认为是最受欢迎的歌手之一。

　　(1)be supposed to表示"理应、应该"之意时等同于should或ought to。

　　(2)be not supposed to do sth.意为"不应该做某事"，表示命令和禁止。

　　(3)be supposed to have done本该做(而没做)

　　③Am I supposed to clean all the rooms or just this one?

　　我是应该打扫所有的房间，还是只打扫这一间？

　　④You are_not_supposed_to_leave here without my permission.

　　没有我的允许，你们不准离开这里。

　　⑤He is supposed to have arrived an hour ago.

　　他本应该一小时前就到了。

　　4．(教材P41)I think I'd better apologize to him tomorrow for not keeping the appointment.

　　我想我最好明天因未能守约向他道歉。

　　★appointment n．[C]约会，预约；[C，U]任命；委任

　　①Will you accept the appointment as principal?

　　你会接受当校长的任命吗？

　　(1)make an appointment　　约会

　　keep an appointment 守约

　　by appointment 按约定，按事先约定的时间

　　(2)appoint vt. 任命；委任，指定(时间、地点)

　　appoint sb. to be/as 任命某人为......

②You should phone his secretary if you want to make an appointment.