实战口语情景对话 第1311期:How do you keep fit? 你怎么保持健康?

重点讲解：
1. come on 得了吧；算了吧；
例句：Come on, Sue, that was two years ago.
得了吧，休，那是两年前。
2. not at all (用于表示强调)一点不，根本没有；
例句：I am not an obsessive. Not at all.
我不是个强迫症患者，完全不是。
3. be good for 有利的；有益的；
例句：They argued all the time and thought it couldn't be good for the baby.
他们一直在争论，认为这对孩子肯定不好。
4. try one's best 尽全力；竭尽所能；尽最大努力；
例句：He said that he would try his best and now he really succeed.
他说过他会全力以赴，现在，他确实成功了。