fruit表示“水果”時(shí),通常用作總稱或集體名詞,不可數(shù).
如：He just lived on fruit.他只靠吃水果維持生命.Would you like some more fruit?
你要不要再吃點(diǎn)水果?若表示水果種類,則是可數(shù)的.
如：The mango is a tropical fruit.芒果是種熱帶水果.The tree bears a red hard fruit.
這種樹結(jié)一種紅色堅(jiān)硬的果實(shí).但有時(shí)到底是表示總稱還是種類,完全取決于具體的語境,有時(shí)兩種情況都說得通.
如：The country exports tropical fruit(s).該國出口熱帶水果.
fruit表示“幾種（多種、各種）水果”時(shí),可直接說some(many,various)fruits,也可用some(many,various) kinds of fruit（后者通常用不用復(fù)數(shù)）.
如：Some [Some kinds of] fruits don’t freeze well at all.有些水果根本就不能冷藏.
They sell various [various kinds of] fruits at that shop.那個(gè)商店賣各種水果