Many foreigners came to our school last week, including three_________ and four_________.

【经典例题1】[2018年 玉林中考]---Hey, boys. Look at the falling___________.
---Well, it's telling us that autumn is coming.
A. leaf             B. leafs             C. leafes           D. leaves
【答案】D
【解析】考查可数名词复数的规则变化。句意:嘿,男孩。看这些落叶!它告诉我们秋天来了。leaf意为:树叶,其复数形式为leaves。
【拓展】 初中阶段以f或fe结尾的名词,其复数形式大多是变f或fe为v,再加es,主要涉及:wife--wives, knife--knives, wolf--wolves, thief--thieves, shelf--shelves, self--selves, life--lives, half--halves, leaf—leaves。  
口诀助记:妻子执刀去宰狼,小偷吓得发了慌,躲在架后保已命,半片树叶遮目光;
【经典例题2】How many ____________ can you see in the picture?
A. tomatos    B. tomatoes    C. tomato   D. the tomato
【答案】B
【解析】考查可数名词复数的规则变化。How many意为:多少,后常接名词的复数形式,而tomato的复数要加es。
【经典例题3】Thomas Edison made more than one thousand ___________ (invent) in his life.
【答案】inventions
【解析】考查可数名词复数的规则变化。句意:爱迪生一生中制造了一千多项发明。one thousand意为:一千,后常跟可数名词的复数形式。
【经典例题4】[2019年 镇江中考] Lots of the latest novels can be borrowed in these newly-built _______ (library).
【答案】libraries
【解析】考查可数名词复数的规则变化。句意:在这些新建的图书馆里可以借到许多最新的小说。these意为:这些,后常跟可数名词的复数形式。
2.可数名词复数的不规则变化
(1) 改变单数名词中的元音字母, 或加后缀,例如: foot-- feet, tooth--teeth, goose-- geese, mouse-- mice
child--children, woman-- women
【经典例题5】 [2019年 曲靖中考] The dentists advise us to brush our _________ (tooth) three times a day.
【答案】teeth
【解析】本题考查可数名词复数的不规则变化。句意:牙医建议我们一天刷三次牙。
(2) 表示“某国人”的名词的单复数,因习惯不同而各异。
① 单复数词形相同: a Chinese-two Chinese, a Japanese-two Japanese  
② 变a为e的: an Englishman-three Englishmen, a Frenchman-six Frenchmen
③ 词尾直接加s的: an American--two Americans, a German--two Germans; 此外, Russian, African, Asian, Australian, Canadian, Italian, European 变复数时都是直接在词尾加s。
【口诀助记】中日不英法变,其他s加后面。
注意:与 man或woman构成的合成词, 其复数形式也是-men和-women, 例如:an Englishman, two Englishmen,但German不是合成词,故复数形式为Germans;
【经典例题6】Many foreigners came to our school last week, including three_________ and four_________.
A. German; American    B. Germans; American    C. Germans; Americans   D. German; Americans
【答案】C
【解析】考查可数名词的单复数变化。句意:上周许多外国人来我们学校,包括三个德国人和四个美国人。
(3) 复合名词的复数形式
① 将复合名词的中心词变为复数, 如: passer(s)-by 路人  daughter(s)-in-law 儿媳妇 step mother(s)继母
② 名词+名词构成的复合名词, 变复数时需将第二个名词变为复数, 如: apple tree--apple trees, shoe shop--shoe shops, letter box--letter boxes, girl student--girl students.
注意: man, woman与其他名词构成的复合名词,变复数时,需将两个名词都变成复数。如: a man teacher- two men teachers, a woman doctor—three women doctors
 
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