英语的演变是一个很有意思的过程，英语中有很多词汇都是有很有意思的“背景”，那么关于它们究竟是怎么样的，又该如何使用呢? 我们一起来探个究竟，以下是小编给大家整理的专业四级高频词汇及短语-7，希望可以帮到大家
121. be certain of (=be sure of) 有把握, 一定
a) We are certain of victory. 我们一定会获得胜利。
122. for certain (=for sure )肯定地,有把握地
a) Some soils are actually too alkaline for certain plant life.
123. by chance(=accidentally, by accident)偶然
a) They met by chance on a plane.
b) 他们在飞机上不期而遇
124. for a change换换环境(花样等)
a) ate early for a change. 变化一下提早吃饭
125. in charge of (=responsible for) 负责(某事)
a) Who's in Charge of this Network?
126. take charge of (be responsible for)负责管理(照顾)
a) She is the youngest manager who takes charge of the overseas business in the company.她是这个公司里负责海外业务最年轻的经理。
127. charge…for 因…索取(费用),charge sb with sth 控告某人犯有…
a) Charges ten dollars for a haircut.
128. round the clock(=all day and all night, usually without stopping) 昼夜不停地
a) This is a terrific mission and we are very busy doing science round the clock.
129. comment on sth评论
a) Everyone commented on her new hat.
b) 大家都在评论她的新帽子。
c) He commented on the bad road.
d) 他评论这条糟糕的路。
130. commit oneself to致力于
a) I commit myself to strive for grades of “C” or better in all my high school classes and to benefit fully from the classes offered during the summer program.
131. commit sb to prison把某人送进监狱;
a) A robbery was committed to prison last night.
b) 昨晚发生了一个强盗被送入了监狱。
132. to commit oneself to a promise 受诺言的约束
133. in common (和…)有共同之处,共用
a) We have many things in common.
134. common touch n. 平易近人的特性
a) An effective administrator and also an effective leader, with a common touch
b) 有效的行政人员，也是有效的领导者，通常有平易近人的品质
135. be common to sb 是与某人所共有的
136. keep company with (=be friendly and go out together) 和…要好
a) If you keep company with a person or with a particular kind of person, you spend a lot of time with them.
137. compare A with B 把…与…比较
a) compare one thing with another
b) 将一物与另一物比较
138. compare A to B 把…比作…
a) Man's life is often compared to a candle.
b) 人生常被喻为蜡烛。
139. by comparison(with) 比较起来
a) He puffed the new system by showing how badly his existing system performed by comparison.
b) Agricultural productivity remained low by comparison with advanced countries like the United States.
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