(1) 两者都可用来修饰不定代词、形容词、副词、动词、介词短语等,此时两者常可换用:It’s almost [nearly] impossible. 那几乎是不可能的。He almost [nearly] always arrives late. 他差不多总是迟到。
He fell and almost [nearly] broke his leg. 他摔了一跤,险些摔断了腿。

 (2) almost 可用于 any 以及 no, none, nobody, nothing, never 等否定词之前,但 nearly 一般不这样用:Almost any man can do it. 几乎任何人都会做。Almost no one came to the party. 几乎没有人来参加晚会。但是,两者都可用在否定动词之前:
He almost [nearly] didn’t catch the bus. 他差点没赶上公共汽车。

 (3) nearly 前可用 very, pretty, not 等词修饰,但 almost 之前不能用这些词:It’s not nearly so difficult as you think. 这远不像你想像的那么难。
【注】not nearly 【注】not nearly 意为“远非”, very [pretty] nearly 意为“几乎”,都是习语。

(4) 有时 almost 可表示十分相似(但又不完全相同),此时不用 nearly:
I almost wish I’d stayed at home. I almost wish I’d stayed at home. 我真有点后悔没在家里呆着。

(1) 两者都可用来修饰不定代词、形容词、副词、动词、介词短语等,此时两者常可换用:It’s almost [nearly] impossible. 那几乎是不可能的。He almost [nearly] always arrives late. 他差不多总是迟到。
He fell and almost [nearly] broke his leg. 他摔了一跤,险些摔断了腿。

 (2) almost 可用于 any 以及 no, none, nobody, nothing, never 等否定词之前,但 nearly 一般不这样用:Almost any man can do it. 几乎任何人都会做。Almost no one came to the party. 几乎没有人来参加晚会。但是,两者都可用在否定动词之前:
He almost [nearly] didn’t catch the bus. 他差点没赶上公共汽车。

 (3) nearly 前可用 very, pretty, not 等词修饰,但 almost 之前不能用这些词:It’s not nearly so difficult as you think. 这远不像你想像的那么难。
【注】not nearly 【注】not nearly 意为“远非”, very [pretty] nearly 意为“几乎”,都是习语。

(4) 有时 almost 可表示十分相似(但又不完全相同),此时不用 nearly:
I almost wish I’d stayed at home. I almost wish I’d stayed at home. 我真有点后悔没在家里呆着。