重点讲解：
1. come up 即将发生；即将到来；
例句：Plan your activities so that you are rested and refreshed when something important is coming up.
做好日常规划，这样一旦发生大事，才能够从容不迫。
2. grow up 长大成人；成熟；
例句：I grew up as part of a large household.
我是在一个大家庭里长大的。
3. at least （数量）至少，不少于；
例句：Preparations would occupy at least an hour.
准备工作至少需要一个小时。
4. be happy to do sth. 乐意的；情愿的；
例句：I'll be happy to answer any questions if there are any.
如果有问题，我很乐意回答。
