<h3>a knife</h3> <h3>two knives 規(guī)則以f，fe結(jié)尾的去掉f，fe，加ves</h3> <h3>a calf</h3> <h3>two calves</h3> <h3>a wolf</h3> <h3>two wolves</h3> <h3>a handkerchief</h3> <h3>three handkerchiefs or handkerchieves 有的名詞，兩種變化都可以</h3> <h3>a scarf</h3> <h3>nine scarfs or scarves</h3> <h3>a roof</h3> <h3>some roofs 有的名詞很特殊，雖然是f結(jié)尾的，但還是直接加s</h3> <h3>a textbook</h3> <h3>four textbooks 規(guī)則一般是直接加s</h3> <h3>a pair of scissors</h3> <h3>two pairs of scissors 可數(shù)名詞可以量化，單復(fù)變化在量詞上變化。</h3> <h3>a pair of glasses</h3> <h3>two pairs of glasses</h3> <h3>a bottle of glue</h3> <h3>two bottles of glue 不可數(shù)名詞也可以量化，單復(fù)數(shù)變化由量詞來完成</h3> <h3>a box</h3> <h3>six boxes 規(guī)則 以s、x、o，ch、sh結(jié)尾的加es</h3> <h3>a bus</h3> <h3>some buses</h3> <h3>a toothbrush</h3> <h3>five toothbrushes</h3> <h3>a watch</h3> <h3>five watches</h3> <h3>a tomato</h3> <h3>some tomatoes</h3> <h3>a potato</h3> <h3>some potatoes</h3> <h3>a candy</h3> <h3>eight candies 規(guī)則以y結(jié)尾的前面的字母是輔音字母，則去掉y，變i，加es。</h3> <h3>a butterfly</h3> <h3>nine butterflies</h3>