【正文】
7)以 f和 fe結(jié)尾的名詞的復(fù)數(shù)有三種情況: a)直接加 s. 一個(gè)首領(lǐng) (chief)帶著一個(gè)農(nóng)奴 (serf)在海灣 (gulf)的懸崖 (cliff)上發(fā)現(xiàn)一個(gè)屋頂 (roof)上面有個(gè)保險(xiǎn)箱 (safe)。 papers(報(bào)紙,稿件 ) works(工廠,作品 ) times(時(shí)代 ) drinks(飲料 ) manners(禮貌 ) ⑥ 部分物質(zhì)名詞可以用復(fù)數(shù)表示種類。 * Her family is a large one and her family are all teachers. 她家是一個(gè)大家庭 ,她的家人都是老師。 sheep deer fish (fishes) ③ 表示“某國人”的名詞 。 A horse is a kind of animals. The horse is a kind of animals. Horses run faster than donkeys. 復(fù)數(shù)名詞的構(gòu)成方式: 1) 名詞后直接加 s。 1. 不可數(shù)名詞 (U) 一般情況下,不可數(shù)名詞沒有復(fù)數(shù)形式,前面不與不定冠詞 a(n)連用,作主語時(shí),謂語動詞用單數(shù)形式。 The United States is made up of 50 states. The United Nations has sent an official there. 但是, The Olympic Games are held every four years. : 個(gè)體名詞 (worker,pen,dog etc.) 集體名詞 (family,group,poli