16. in preparation for 为…做准备 prepare for 为…做准备 make preparations for 为...作准备

15. light the torch 点燃火炬 (lit-lit; lighted-lighted) 　He lit a candle and the lighted candle lit up the room.

14. host the Olympic games 主办奥运会

13.rank third/high/low位居第三/排名高/低She ranks first in English study in our class.People of all ranks 各个阶层人

12. do ／try one's best to do sth 尽力做某事

11. in modern times 在现代 in ancient times 在古代

10. allow /permit/forbid sb to do sth 允许/禁止某人做某事 allow/permit/forbid doing sth 允许/禁止做某事

Nothing is permitted; everything is allowed. 一切都不(明文)准许；但也不(明文)禁止。

9. compete in 参加(竞赛) compete against/with 与…相对抗 compete for 为…而竞争

8. take part in = join in = participate in 参加 　attend 出席 join sb (in doing sth) 和某人一起做某事

7. every four years每四年；每隔三年every fourth year每第四年every other year每隔一年every few years每隔几年