土豆是可數還是不可數名詞

　　In a field we found a lot of exotic flowers, though what we have planted were potatos.

　　雖然我們種的是土豆，但在一塊地里我們發現長出了許多奇異的花朵。

　　The cooking time needed depends on the size of the potato.

　　烹飪時間長短取決于土豆的大小。

　　Now experts are extolling the virtues of the humble potato.

　　現在專家們在頌揚粗陋的馬鈴薯的種種好處。

　　I went and bought about six dollars' worth of potato chips.

　　我去買了價值約六美元的土豆片。