重点讲解：
1. be late for
迟到；
eg. He was late for school, as was often the case with him.
他上学迟到已是家常便饭了1r4YqC-hhZ。
eg. I shall be late for lunch, if I stop any longer.
我要再呆下去，吃午饭就来不及了M8mO8XQ(s^H_v!fE-。
2. work out
想出，得到（解决方法）；解（谜）；
eg. We can find a way to work out this problem.
我们可以找到解决这个问题的方法T;G11krDfIU-hm3。
eg. I could work out that problem standing on my head.
我解决那个问题易如反掌]0hH;JtECYmSige。
3. at the end
最后；
eg. You'll have the opportunity to ask any questions at the end.
你们最后将有机会提问任何问题dU_e=kRa@s51O8EGgW4。
eg. At the end the old car was practically falling apart.
最后，这辆旧汽车实际上已经要零散了mwSYb=wtbKk。