1台电视机 a TV set
1套沙发 a set of sofa
1个苹果 an apple
1支笔 a pen
1份文件 a document
1束花 a bunch of flower
1双鞋 a pair of shoes
1块蛋糕 a piece of cake (也有"小意思"的意思)
1把沙子 a handful of sand
1份《晨报》a copy of the Morning Paper
1打 dozen
1滴水 a drop of water
等等
a
a set of
a pair of
等等
需要根据具体情况来定
直接用单词的单数形式
a set of
a suit of
a piece of