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
