基數(shù)詞變序數(shù)詞

一：變化規(guī)則

基變序有規(guī)律，詞尾要加 “th”；

第一、二、三要注意，詞尾各是“t”“d”“d”；

八減“t”，九去“e”，“ve”要變成“f”，“y”要變成“ie”

然后再加“th”；若是遇到幾十幾，前變基來(lái)后變序。

序數(shù)詞前必加“the”

二：寫出下列詞的適當(dāng)形式。

1. eight (序數(shù)詞)___________  2. fourth (縮寫)_________

3. 2^nd (完整形式)___________    4. twenty(序數(shù)詞)_______

5. one(序數(shù)詞)_____________  6. five(序數(shù)詞)_____________

7.senventh(基數(shù)詞)____________ 8. three(序數(shù)詞)_____________

9. ten(序數(shù)詞)_____________ 10. ninth (基數(shù)詞)_____________

11. twelve(序數(shù)詞)________12. fourty--six(序數(shù)詞)____________

三：選擇

 (    ) 1. How old are you?----I’m ______

       A. fourteen   B. fourteenth    C. 14^th

(    ) 2. The badroom is on the ______ floor.

       A. three     B. threeth     C. third

(    ) 3. How many apples do you have?----- I have ______

      A. eight       B. eightth     C. eighth

(    ) 4. There are ______ living rooms in the house.

      A. second    B. two    C. twoth

(    ) 5. The National Day is ______ the October 1^st.

      A. in    B. at    C. on