81.occur 发生;出现

　　82.sth occurred to sb 某人想起某事

　　83.take place 发生/举行

　　84.if/whether/weather 是否/是否/天气

　　85.break out (疾病/火灾/战争)爆发

　　86.break down (机器)坏了;(汽车)抛锚;(健康)垮掉;(人)失声痛哭(崩溃)

　　87.instead of 代替;而不是

　　88.look up to/look down on/upon 敬仰;尊敬/轻视;瞧不起

　　89.be half/twice/three times/four times/five times as large as… 倍数表示法

　　90.much higher than…/much more expensive than… 比……高(贵)得多

　　91.discover/find/find out/found/set up 发现/找到/搞清楚(弄明白)/成立/建立

　　92.set out/set off 出发

　　93.fill in/fill out 填写

　　94.no matter how difficult/however difficult 不论多么难

　　95.used to do…/be used to do…/be used to doing… 过去常常做/被用来做/习惯于做

　　96.it is no good/use doing… 做……没用

　　97.have sb do…/have sth done 使(让)某人做……/找人做……

　　98.make sb do…/be made to do… 迫使某人做……/被迫做……

　　99.be covered with snow 覆盖着积雪

　　100.get married to sb 和某人结婚