重点讲解：
1. regard as 认为；把…看作；
例句：He is regarded as the best doctor in town.
他被公认为城里最好的医生。
2. instead of 代替…；而不是…；
例句：They decided to go by plane instead of by train.
他决定乘坐飞机去,而不乘火车了。
3. work out 想出，得到（解决方法）；解（谜）；
例句：I will have to stay up late to work out a new plan.
我要熬夜写个计划。
4. deal with 涉及；处理；
例句：Many movies deal with commonplace themes.
许多电影的主题很平庸。
