11. be busy with sth → be (fully) occupied with sth 忙于某事 be busy doing sth → be (fully) occupied (in) doing sth 忙于做某事 【例句 】 He's fully occupied looking after three small children. 他所有的 时间都用来照顾三个小孩子了。

12. buy v. → purchase 购买 【用法】 Where did you purchase the book? 你在哪里买到这本书的 ?

13. choose sth → opt for sth 选择某物 choose to do sth → opt to do sth 选择做某事 【例句 】 After graduating he opted to take a job as a database progra mmer. 毕业后他选择接受一份数据库程序员的工作。

14. choice n. → option 选择 【用法】 option for sth ， option to do sth ， option of doing sth 【例句 】 Teenage mothers often have no option but to live with their p arents. 少女妈妈常常别无选择，只能跟父母住在一起。

15. consider sth → take sth into consideration/account 考虑到某事 【例句】 ① Environmental factors should be taken into consideration in the pro gram.