54.keep sb. doing… 使某人做…

　　很抱歉让你久等了。

　　I’m sorry to keep/ have kept you waiting for such a long time.

　　55.make / let sb.( not) do sth. 让(使)/ 允许某人做（不做）某事

　　7:00了， 让我们上学去吧。

　　It’s 7:00. Let’s go to school.

　　这个电影使我哭了。

　　The movie made me cry.

　　56.like to do /like doing 喜欢做某事

　　他喜欢坐公交车上学。

　　He likes to go to school by bus.

　　= He likes taking the bus to school.

　　57.keep / make sth./ sb +adj. 保持/使某物怎么样

　　请保持教室的清洁。

　　Please keep the classroom clean