不规则变化两种。规则变化
情况 变化形式 例词
一般情况 加-s girls; books;
以sx.ch，sh结尾的名词 加-es classes; boxes; watches;brushes
以辅音字母加y结尾的名词 变y为i，加es city---cities;baby---babies以f或fe结尾的名词 变f，fe为v, 加es knife---knives; leaf---leaves以O结尾的名词 potatoes;tomatoes; photos; kilos;bamboos; radios
2、少数名词有不规则的变化形式
policeman---policemen;man---men; woman---women;
tooth---teeth; foot---feet; sheep---sheep;deer---deer;
Japanese--- Japanese; Chinese --- Chinese;fish --- fish
四、名词所有格(运用)
名词的所有格是表示所有关系的形式，它也有构成上的变化。
1、单数名词变所有格，只需在词尾加’s；
2、复数名词的词尾已有s，只需加’即可；
3、复数名词的词尾若没有s，则应加’s；
4、如果表示某人或物为两人所共有，则在第二个人后面加’s；如：Da Mao and Xiao Mao's room
如果不是两人共有，则在每个人后面都加’s；
如：Li Lei's and Tom's mother
5、名词所有格结构通常用于表示有生命的名词，或表示时间、距离、地点等，而表示无生命名词的所有关系则用“of”表示。
如： the windows of housethe picture of the family
of 结构也能用于有生命名词的所有格。
a friend of my sister's
a book of his
下面汉英美句让同学们阅读赏析～
Books, like friends, should be few and well chosen
读书如择友，宜少且宜精。
Sometimes you can't see what you're learning until you come out the other side.
有时候，直到拨云见日，才能豁然开朗。
Don’t let the past steal your present.
别让过去悄悄偷走了你的当下。
Speech is silver, silence is gold
能言是银，沉默是金。
Don’t try so hard, the best things come when you least expect them to
不要着急，最好的总会在最不经意的时候出现……
What you are you do not see, what you see is your shadow.
你看不见你自己，你所看见的只是你的影子。
Let life be beautiful like summer flowers and death like autumn leaves.
生如夏花之绚烂，死如秋叶般静美～
Where there is a will, there is a way
有志者事竟成～
Give me the strength lightly to bear my joys and sorrows.
请赐给我力量使我能轻闲地承受欢乐与忧伤。
Had I not seen the Sun
I could have borne the shade
But Light a newer Wilderness
My Wilderness has made
假如我没有见过太阳，
我也许会忍受黑暗，
可如今，太阳把我的寂寞，
照耀得更加荒凉。
The world has kissed my soul with its pain, asking for its return in songs.
世界以痛吻我，要我报之以歌……
No pains， no gains。
一分耕耘，一分收