重点讲解：
1. be afraid to do sth.
害怕；恐惧做某事；
eg. I'm still afraid to sleep in my own bedroom.
我还是不敢在自己的卧室里睡觉。
eg. He who rides a tiger is afraid to dismount.
骑虎难下。
2. be aware of sth.
知道的；明白的；注意到的；察觉到的；意识到的；
eg. Smokers are well aware of the dangers to their own health.
吸烟的人都知道吸烟对自身健康的危害。
eg. I was aware of a certain constraint on their part when they were in my presence.
我觉察到我在时他们有些拘束。
3. Are you serious?
常用口语，表示“你是当真的吗？”“你说真的吗”“你是认真的吗”；
eg. Are you serious? You haven't even been anywhere on vacation?
没开玩笑吧？你休假时哪儿也没去过吗？
eg. Are you serious or joking?
你是认真的还是开玩笑？
4. edit out
删除，删节；
eg. His voice will be edited out of the final film.
电影的最终版本会剪掉他的声音。
eg. She edited that line out again.
她再次删掉了那句台词。
5. by any means
无论如何；以任何手段；
eg. He insisted that all of us should be there on time by any means.
他坚持要我们大家想尽办法按时去那儿。
eg. By any means,we should tell him frankly what we think of his proposal.
无论如何，我们应该直率地告诉他我们对他建议的看法。