Words and Expressions:
colour same sister whose green lovely
mother mother blue case brother perhaps upatairs carpet tie white hat blouse Lesson 15 customs n. 海关
Eg. He goes through customs.
Custom n. 习惯 customs (复数) 习惯的复数形式 Eg. We Chinese has many customs Danish adj&n, 丹麦人; 丹麦语 Denmark n. 丹麦（国名） Eg: My friends are Danish. friend
friendly adj. 友好的
dog
his
catch
smart
father
her
be friendly to sb 对....友好 Eg. She is friendly to me. Norwegian adj&n. 挪威人 Norway 挪威（国名）
Eg. I am Norwegian. I am from Norway. Grammar:
可数名词单数变复数的变化规则 1). 一般情况,直接加-s.
boy---boys book---books dog---dogs an egg --- eggs a book --- books a passport --- passports
2). 在以“s” “x” “sh” “ch”结尾的单词，在单词后面 +“es”。 a bus --- buses a dress --- dresses a box --- boxes a fish --- fishes a watch --- watches
辅音字母+ y, 变y为i,加-es
university—universities, baby---babies, family---families, fly---flies, country---countries, 4.以o结尾加-es
hero—heroes, potato---potatoes, tomato---tomatoes o前为元音字母,及部分外来词直接加-s
zoo—zoos radio—radio piano—pianos photo—photos
5.以f或fe结尾,变f或fe为v,再加-es leaf—leaves wife—wives, knife---knives life---lives
※以下f结尾单词直接加-s belief—beliefs(信念) roof—roofs(屋顶) proof—proofs(证据) safe—safes(保险柜) chief—chiefs(首领) gulf—gulfs(海湾) 6.不规则名词
man—men, woman—women, foot—feet, tooth—teeth, goose—geese, mouse—mice, child—children
注:1:有些可数名词的单复数相同,要根据上下文的意义来确定其单数还是复数,例如:
sheep 羊 fish 鱼 deer 鹿
means手段,方法 works工厂,作品 series系列
注2:在些可数名词,只有单数形式,但表示复数意义.如果作主语,谓语动词用复数形式.
如:cattle 牛 people 人民 police 警察 These cattle are from Holland.
注3:集合名词既可看作单数(作为整体),也可看作复数(作为集体的各个成员).例如:audience(观众) class(班级) family(家庭) group(小组) Her family is well-known in the region. 她家在该地区是名门望族. His family are quarrelling severely about the property. 她的家人正在为分财产激烈地争吵.
