3.特殊变化的单词有：(1)tooth--teeth，foot--feeth

(2)man--men，woman--women，policeman--policemen,Frenchman--Frenchmen

　 请区别：German(德国人)-Germans　　 (3)child-children　　　　　　

2.单复数形式相同的词：sheep--sheep，fish--fish　　 Chinese--Chinese，Japanese--Japanese

单数可用a、an来修饰可数名词单数，在元音发音开头的单词前用an，而不是a

1.复数的构成方法：(1)一般在复数名词后加s，如：dog--dogs。

(2)以s、x、ch、sh结尾的名词加es，如：watch--watches。

(3)以辅音字母加y结尾的名词，变y为i加es，　　 如：country--countries。

请区别：如果是元音字母加y结尾的名词，则只须加s。　 如：monkey--monkeys。

(4)以o结尾的名词，只有potato(土豆)，tomato(西红柿)加es构成复数。

(5)以f、fe结尾的名词，变f、fe为v再加es， 如：knife--knives。　

VIII、补全对话(5分)根据对话内容，从方框中选出能填入空白处的最佳选项。选项中有两项为多余选项。

G: George　 A: Alice

G: Hi, Alice! How was your last summer holiday？

A: 　　　　　1　　　　　　　 　.

G: Where did you go?

A: I went to Yinchuan with my parents.

G:　　　　　 2　　　　　　　　 　.

A: It’s one of the most beautiful cities in the northwest of China. I like it very much.

G: How long did you stay there?

A: We stay there for five days. 　　　　　3　　　　　

G: Which is your favorite place?

A: 　　　4　　　 　When I was there, I lost myself in the beautiful scenery.

G: What interesting thing did you do there?

A: Lots of things, such as swimming, boating, fishing and riding camels. 　　　5　　　

G: Oh, really, I can’t wait to go there.