expression既可作可数名词，也可作不可数名词，当翻译成表现、表示、表达时为可数名词，当翻译成表情、脸色、态度、腔调、声调时为不可数名词；
可数名词可以用数目来计算。而不可数名词不能用数目来计算，不可以分成个体的概念。
扩展资料
expression双语例句
1.These expressions are often used interchangeably, but they do have different meanings.
这些表达方式经常相互替代使用，但它们的含义却有所不同。
2.From Cairo came expressions of regret at the attack.
开罗对此次攻击表示遗憾。
3.She spoke in a quiet voice but used remarkably coarse expressions.
她说话声音很小，但是用了些特别粗俗的字眼儿。
4.I couldn't see Helen's expression, because her head was turned.
我看不到海伦的`表情，因为她转过头去了。
5.The silence lengthened. Bella's expression was inflexible.
沉默了良久，贝拉的表情依然很坚定。
