内容正文:
外研版三年级起小升初数词专题讲解+强化训练练习(五)含答案
数词专题讲解
一、数词的分类
基数词+序数词
基数词:表示数目或数量的词称为基数词。
区别:基数词前面没有“the”;序数词前一定要有“the”。
1、超过二十以上的两位数需要在个位和十位之间加上“-”。如:21 twenty-one
2、用基数词来修饰可数名词时,一定别忘了它的复数形式。如:十八个男孩 eighteen boys
3、用基数词修饰不可数名词时,如是复数,变它的量词为复数。如:两碗米饭 two bowls of rice
4、序数词一般加“th”,特殊的有:first, second, third, fifth, eighth, ninth, twelfth;
二十及二十以外的整十:twentieth, thirtieth, fortieth…
“第几十几”:前面整十不变,后面“几”改为序数词。如:88 eighty-eighth
基数词变序数词记忆口诀
基变序,有规律,结尾都加"th".
一二三需特记,结尾带有t、d、d.
八减t 九去e, ve要用f替.
y要变"ie", 结尾仍有th.
基数词序数词对照表
1
one
first
1th
2
two
second
2nd
3[来源:学§科§网]
three
third
3rd
4
four
fourth
4th
5
five
fifth
5th
6
six
sixth
6th
7
seven
seventh
7th
8
eight
eighth
8th
9
nine
ninth
9th
10
ten
tenth
10th
11
eleven
eleventh
11th
12
twelve
twelfth
12th
13
thirteen
thirteenth
13th
14
fourteen
fourteenth
14th
15
fifteen
fifteenth
15th
16
sixteen
sixteenth
16th
17
seventeen
seventeenth
17th
18
eighteen
eighteenth
18th
19
nine