2012年05月21日 02时44分，《2011英语:英语四级翻译考试真题分析语法篇：定语从句》由出国留学网liuxue86.com英语编辑整理.

（三）定语从句

1. The prevention and treatment of AIDS is (我们可以合作的领域) （07.6）

The field in which we can cooperate

2. Medical researches are painfully aware that there are many problems_________ (他们至今还没有答案) （08.12）

to which they still have no answers

强化练习

1. which is on the increase.

考点：本题考查非限制性定于从句 which 指代前句话的用法，考生不易想到。

2. as many famous stars who should have appeared did not come.

考点：在英语中表示过去应该做而实际上没有做的事，要用“should + have +过去分词”的句式。