对于专四的词汇，想要攻克的最实用方法就是练习，在看懂单词的基础上，进行一些必要的专四词汇练习。
concentrate v.全神贯注，精神集中，专心致志;集中，集合;浓缩
We should concentrate all our efforts on improvingeducation.我们应该集中精力努力改进教育工作。
Troops are concentrating south of the river.军队正向河的南边集结。
n.浓缩液
【用法】concentrate(sth.)on sth./doing sth.
【全真考题】Anne couldn't concentrate _____ whatshe was doing while her family were watching TV.(93.1)
【答案】B
continual adj.继续不断的;一再重复的
continual rain 不停的雨
【辨析】continual与continuous
continual一般指多次重复的动作：Please stop your continual questions.
continuous表示动作或物体继续不停地或不间断地进行下去：a continuous flow of traffic
【全真考题】Our journey was slow because the train stopped _____ at different villages.(99.1)
asingly ually
inuously inually
【答案】D
contrary adj.(在性质、倾向或方向等方面)相反的;好与人作对的
contrary beliefs 截然相反的信仰
He is an awkward，contrary child.他是个又麻烦又不听话的孩子。
n.反面
【用法】contrary to 违反：be contrary to the law;on the contrary 与此相反：It doesn't seemugly to me;on the contrary，I think it's rather beautiful.
【全真考题】What you have done is _____ the doctor's orders.(90.1)
ched to onsible to
stant to rary to
【答案】D
contributev.捐款，捐助;有助于;投稿
We contributed clothing to the relief of the poor.我们捐赠衣物救济贫民。
Hard work contributed to his success.努力工作使他成功。
He contributed poems to the magazine.他投诗稿给杂志。
学识谷
