Unit 1 Making new friends Topic 3 How old are you? 课件(共23张PPT)

(共23张PPT)
Unit 1 Topic 3
How old are you
seed class
普通名词
book, ruler , Susan, Jane , map , eraser, orange , bike
school , China , bus , box , class , grade , Cuba, Li Xiang
找出下列名词中的普通名词：
book, ruler , Susan, Jane , map , eraser, orange , bike
school , China , bus , box , class , grade , Cuba, Li Xiang
专用名词
a/an被称作不定冠词，用在可数名词前，表达某一个人或事物中的一个，相当于汉语的“一”， 但不强调数目概念。
可数名词复数形式
可数名词单数形式
ruler 直尺
a ruler
rulers/
four rulers
“s” /“es”用在可数名词后，表达某人或某物中的一
个以上的含义，相当于汉语的“一些，几个”，
也可以有具体数目修饰。
It's a pen. [pen]
It's a pencil. [ pensl]
It's a map. [m p]
It's a desk. [desk]
It's a ruler.
[ ru l (r)]
It's a car. [kɑ (r)]
It's an apple. [ pl]
It's an eraser. [ re z (r)]
It's an egg. [eɡ]
It's an orange. [ r nd ]
It's a pen. [pen]
It's a pencil. [ pensl]
It's a map. [m p]
It's a desk. [desk]
It's a ruler.
[ ru l (r)]
It's a car. [kɑ (r)]
It's an apple. [ pl]
It's an eraser. [ re z (r)]
It's an egg. [eɡ]
It's an orange. [ r nd ]
a/an被称作不定冠词，用在单数可数名词前，表达某一个人或事物中的一个，相当于汉语的“一”， 但不强调数目概念。
a和an的区别 a 用在以辅音音标开头的单词前， an 用在以元音音素开头的单词前 。
注意：我们看的是音标，而不是元音字母。
I have an apple.
I have one apple and three oranges.
我有一个苹果。
我有一个苹果和三个橘子。
a/an和one都表达某一个人或事物中的一个，相当于汉语的“一”， 但a/an强调种类，one强调数目。
用a/an填空。
_____pen _____bag _____ apple
_____banana _____eye _____teacher
_____family _____morning _____book
a
a
an
a
an
a
a
a
a
one car [kɑ (r)]
11
eleven cars
[ levn]
one toy
[t ]
twelve toys
[twelv]
[b s]
one bus
thirteen buses
[ θ ti n]
[b ks]
one box
fourteen boxes
[ f ti n]
[ f m li]
one family
fifteen famlies
[ f f ti n]
[ be bi]
one baby
sixteen babies
[ s ks ti n]
[w lf]
one wolf
seventeen wolves
[ sevn ti n]
[[na f]
one knife
eighteen wolves
[ e ti n]
[p te t ]
one potato
nineteen potatoes
[ na n ti n]
[t mɑ t ]
one tomato
twenty tomatoes
[ twen ti]
可数名词复数变形规则：
(1) 在一般情况下直接在词尾加-s;
例如: desk-—desks pen-—-pens
(2) 以-s, -x, -ch, -sh 结尾的单词和某些以o结尾的名词在词尾加-es;
例如: box-—boxes (盒子)
bus-—-buses (公共汽车)
(2) 以-s, -x, -ch, -sh 结尾的单词在词尾加-es;
例如: box—boxes (盒子)
bus—buses (公共汽车)
tomatoes （西红柿）
(2) 以辅音字母+y 结尾的单词变y为i再加-es;
辅音字母f/ fe 结尾的单词变f/ fe为v再加es.
例如: family-families (家庭)
baby-babies (婴儿)
boy-boys （男孩）
knife-knives（小刀）
写出下列名词的复数形式。
orange_____ eraser_____ map _____
desk_____ eye _____ teacher _____
family _____ book _____