重点讲解：
1.lie to 向某人撒谎；对…撒谎
例句：He said he would never lie to me.
他说他从来不会对我说谎。

2.sad thing is 不幸的是；可悲的是
例句：The sad thing is that the environmental conditions will not.
不幸的是，环境条件不会改善。

3.count on 指望；料想到
例句：I didn't count on John arriving so early; we've not even started preparing dinner yet.
我没有料想到约翰会这么早到；我们根本还没开始准备晚餐。

4.long overdue 早就该
例句：They pressed him to complete the formalities long overdue.
他们催他去办早就该办的手续。