I wanted to have a suit made so I bought three and a half yards of cloth.
我想讓人給我做壹套衣服，所以我買了三碼半布料。
當cloth用來指特定用途的布時，是可數名詞，可以有復數形式的cloths：
1. She cleaned the window with an old cloth.
她用壹塊破布擦窗戶。
2. Have you any cloths for polishing the furniture?
妳有擦家具的布嗎？
clothes則是指“衣服”，只有復數形式：
1. He wore ready-made clothes.
他穿做現成的衣服。
2. He soon changed into the dead man’s clothes for sale.
他立即換上了死者的服裝。