91. buy sth. for…money 用多少钱买
　　92. be capable of 能够, 有能力 be capable of being +过去分词是能够被…的
　　93. in any case(=for love or money, at any rate, at any price, at any cost , whatever happens; anyhow)无论如何
　　94. in case (=for fear that) 万一;
　　95. in case of (=in the event of)如果发生…万一 in the case of 至于…, 就…而言
　　96. in no case在任何情况下都不(放句首倒装句)
　　97. be cautious of 谨防
　　98. center one’s attention on(=focus one’s attention on) 把某人的注意力集中在…上
　　99. be certain of (=be sure of) 有把握, 一定.
　　100. for certain of (=for sure )肯定地,有把握地
　　101. by chance(=accidentally, by accident)偶然
　　102. for a change换换环境(花样等)
　　103. charge sb. with …控告某人犯有…
　　104. in charge of (=responsible for) 负责(某事) in the charge of …由…管
　　105. take charge of (=to be or become responsible for)负责管理(照顾)
　　106. charge…for 因…索取(费用) , charge sb. with sth. 控告某人犯有…
　　107. round the clock(=all day and all night, usually without stopping) 昼夜不停地
　　108. comment on 评论
　　109. commit oneself to 使自己承担… commit sb. to prison把某人送进监狱; commit one’s idea to writing 把某人的想法写下来; commit a matter to a committee 把某事交给委员会讨论
　　110. in common (和…)有共同之处,共用. be common to sb. 是与某人所共有的
　　111. keep company with (=be friendly and go out together) 和…要好.
　　112. compare…with … 把…与…比较
　　113. compare…to… 把…比作…
　　114. by comparison 比较起来
　　115. in comparison with (=in contrast to) 和…比起来
　　116. compensate for (=give sth. to make up for) 补偿, 赔偿,弥补 compensate sb. for sth. 赔偿,弥补
　　117. complain of (or about)抱怨;诉苦;控告;complain about 抱怨某人或事情; complain to sb. about sth. (or sb.) 向某人抱怨…; complain (抱怨); complement (补充); compliment (恭维)
　　118. comply with (=act in accordance with a demand, order, rule etc.) 遵守, 依从
　　119. conceive of (think of, imagine, consider) 想象,设想
　　120. concentrate on (or upon) 集中,专心
<同根词>