[译] 我们上星期买了几件家具。
[误] We bought several furnitures last week.

[正] We bought several furniture last week.
[正] We bought several pieces of furniture last week.
[注] furniture 是集合名词，没有复数形式，表示“一件家具”，可以说 a piece of furniture，“两件家具”就是 two pieces of furniture。而表示“几套家具”，既可以说 several furniture，也可以说 several pieces of furniture。