重点讲解：
1. hear of
听说；
eg. Your mother will be furious if she gets to hear of this.
你母亲若知此事定会怒不可遏。
eg. I must admit I was rather disturbed to hear of his failure.
我必须承认听到他失败的消息我甚感不安。
2. continue to do sth.
继续；持续做某事；
eg. We will continue to hold meetings on Thursdays, as heretofore.
一如既往，我们将继续每星期四开会。
eg. Sales figures continue to show signs of improvement.
销售额持续显示出增加的迹象。
3. know of
听说过；略有耳闻；
eg. We know of the incident but have no further details.
我们听说过这件事，但对详情不是很清楚。
eg. It was gratifying to know of the success of our efforts.
听说我们的努力取得了成功是令人欣慰的。
