重点讲解：
1. even though 即使；尽管；纵然；
例句：He went on talking even though no one was listening.
即使没有人在听，他还是继续讲下去。
2. pick up 取走；
例句：She went over to her parents' house to pick up some clean clothes.
她去了趟父母家取些干净衣服。
3. be keen on （对…）喜爱的，满怀热情的；
例句：I am not really keen on having a meal with her.
我其实不喜欢同她一起吃饭。
4. together with 连同…一起；还有；加之；
例句：He sent her some roses, together with a nice letter.
他送她几枝玫瑰，随同附上一封动人的信。
5. devote to 献（身）；奉献，投入（时间、精力等）；
例句：She gladly gave up her part-time job to devote herself entirely to her art.
她欣然辞去了兼职工作，全身心地投入到她的艺术中去。
6. be based on 以…为基础；
例句：This theory is based on rational decisions.
这种理论依据理性的决策。
