almost, nearly, about, approximately, roughly
这些副词均有“大约，差不多”之意。
：指在程度上相差很小，差不多。
例如：In his blind haste he almost ran into the river.他匆匆忙忙地几乎跑到河里去了。
(nearly与almost含义基本相同，侧重指数量、时间或空间上的接近。)
例如：The ball struck him so hard that he nearly fell into the water.那球重重地打在他身上，他几乎掉下水去。
：常可分almost和nearly换用，但about用于表示时间、数量的“大约”时，实际数量可能多也可能少。
例如：She died about two years ago.她大约在两年前就死了。
imately ：多用于书面语，指精确度接近某个标准以致误差可忽略不计。
例如：this is just an approximate figure.这仅是个大概数字。
y ：指按精略估计，常代替about。
例如：He roughly outlined the plot of the opera.他粗略地概述了歌剧的情节。
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