基数词变序数词
一:变化规则
基变序有规律,词尾要加“th”;
第一、二、三要注意,词尾各是“t”“d”“d”;
八减“t”,九去“e”,“ve”要变成“f”,“y”要变成“ie”
然后再加“th”;若是遇到几十几,前变基来后变序。
序数词前必加“the”
二:写出下列词的适当形式。
1. eight (序数词)___________ 2.fourth (缩写)_________
3. 2nd(完整形式)___________ 4. twenty(序数词)_______
5. one(序数词)_____________ 6. five(序数词)_____________
7.senventh(基数词)____________ 8. three(序数词)_____________
9. ten(序数词)_____________ 10. ninth (基数词)_____________
11. twelve(序数词)________12. fourty--six(序数词)____________
三:选择
( )1. How old are you?----I’m ______
A.fourteen B. fourteenth C. 14th
( ) 2. The badroom is on the ______ floor.
A. three B. threeth C. third
( ) 3. How many apples do you have?----- Ihave ______
A. eight B. eightth C. eighth
( ) 4. There are ______ living rooms in thehouse.
A. second B. two C. twoth
( ) 5. The National Day is ______ the October1st.
A. in B. at C. on
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