重点讲解：
1. go on
进行；发生；
eg. I don't know what's going on.
我不知道发生了什么事。
eg. While this conversation was going on, I was listening with earnest attention...
这场对话进行的时候，我聚精会神地听着。
2. for sure
无疑；肯定；
eg. Even to this day we don't know what happened for sure.
即使到现在我们也不确定究竟发生了什么。
eg. If we could by any possibility manage to do it, we would for sure.
如果我们有办法做那事，我们一定会做的。
3. allow sb. to do sth.
允许；容许；准许；
eg. This should not be allowed to happen.
我们不应允许这种情况出现。
eg. He promised to allow justice to run its course unimpeded.
他承诺要让司法正义不受阻碍地得到伸张。
4. force sb. to do sth.
强迫；强制；
eg. The enemy surrounded the town trying to force them to surrender .
敌人围困了这个城，想逼他们投降。
eg. He was forced by the scandal to resign the office to which he had been elected.
他因丑闻而被迫辞去他已当选的职务。
