【问】 A lot of students get concerned____their grades only at the end of the term.
 A. in B. with C. for D. about
 (《新编大学英语四、六级常考词题库》(P. 124)给的答案是D(about)。能否选B(with)或C(for)呢?
 【答】 有些英语语法书和英汉词典(如1997年版的《考试备用英汉词典》》都强调指出be con-cerned about是指“关心”，而be concerned with则是指“与……有关”、“与……有牵连”、“涉及到”。例如：
 1. We are not concerned with that matter. (Wood)
 我们跟那件事无关。
 2. This story is concerned with a Russian family in the 19th century. (LDCE)这篇故事描述的是十九世纪的一个俄国家庭。
 但是，实际上，be concerned with也可以指“关心”、“关怀”：
 1.She is deeply concerned with our health problem.
 她很关心我们的健康问题。
 2. We are more concerned with efficiency than expansion. (EED)
 我们对效率比对扩张更加关心。
 3. The novelist is not concerned with other people's atittude to his work. (Fox)
 这位小说家不关心其他人对他的著作的态度。
 4. We're not concerned with his motives. (Snow)
 我们对他的动机不感兴趣。
 还应当知道，be concerned for也常常用于表示“关心”、“关怀”，因此，选C(for)也肯定是正确的。
 1. We are all concerned for[about] her safety. (ALD)
 我们大家都关心她的安全。
 2. A good employer should be concerned for the welfare of his workers. (Wood)
 好的雇主应当关心工人们的福利。
 请做下面的英语试题：
 Many doctors have become concerned of the possible long-term effects of birth control pills. (TOEFL，71.3)