这两个词都可以作副词,但意义和用法不同.
almost = very nearly.指在程度上相差很少,almost可与no,none,nothing,never,nobody等表示否定意义的词连用.如：
I almost missed the flight． 我差一点误了航班.
Almost no one believed what he said． 几乎没人相信他的话.
mostly＝mainly“大部分”“主要地”“通常地”.如：
The students in our class are mostly from the factory． 我们班的学生主要来自这家工厂.
His stories were mostly about his travels in foreign countries．
他的故事大多是关于他在国外旅游的经历.
almost
1.几乎,差不多
It was almost dark when they got there.
他们抵达那里时,天几乎黑了.
mostly
1.大多数地,大部分地;主要地
Lizards live mostly in warm climates.
蜥蜴主要生长在气候温暖的地方.
The audience consisted mostly of women.
观众多数是妇女.
2.一般地,通常
We are mostly out on Sundays.
星期天我们一般不在家.
