Unit 3 This is my sister.
Father and mother
I
love you.
Let’s learn some new words first.
Section A
family
parents
grandmother
grandfather
sister
brother
friend
1.family 作为一个整体时, 意思是“家庭”, 后面谓语动词用单数形式。 如果把family看作家庭成员时, 应理解为 复数, 后面的谓语动词用复数形式。例如: My family are very well. 我的家人都很健康。 Tom has a big family. 汤姆先生有个大家庭。
你知道怎么向别人介绍自己的家庭成员吗?
This is my … These are my…
That is my …Those are my …
注意到了吗?
单数 this that it is
复数 these those they are
Grammar Focus(一)名词单复数。名词可分为可数名词和不 可数名词,可数名词又分为单数和复数。表 示一个人或事物的名词用单数,表示两个以 上人或事物的名词用复数。英语名词复数形 式通常是在单数名词后面加–s或-es构成。 ⑴一般名词后面加-s ,如: pencil—pencils egg—eggs
⑵以-s, -x, -ch, -sh结尾的名词后面加–es , 如: box— boxes class—classes ⑶以辅音字母+y结尾的名词,把y变成i,再加–es,如: story—stories city—cities ⑷以元音字母+y结尾的名词,后面直接加–s, 如: day—days boy—boys (5)以“o”结尾的,有的加 “s”, 有的加 “es” 如: Photo-photos, piano-pianos, zoo-zoos tomato-tomatoes, potato-potatoes (6)以f/fe结尾的名词,一般去f/fe加ves, 如:wife-wives,leaf-leave 注:但有些词直接加s, 如:chief-chiefs, scarf-scarfs 不规则变化: child-children woman-women man-men foot-feet tooth-teeth sheep-sheep
在单数名词后面加-s或-es时,注意发音。发音规则表如下:
情况
读法
例词
在[p][t][k] [s] maps,cats, desks [f]等清辅音后面以-s,-sh,-s,-ch 等结尾 [iz] buses,boxes, classes
在[l][n][g] [z] Beds Girls 等和元音音素后面 trees,days
将下面的单词改为复数形式。 1. ruler ____ 2. student _____
3. book ____ 4.business _____5.watch ____ 6.box ____ 7.brush ____ 9.key ____ 11.life ____ 13.roof ____ 8.baby ____ 10.piano ____ 12.shelf ____ 14.people ____