第二十三讲 数词（5）.mp36:06

来自杜2鹃

1

I‘m____ and I have a____ sister.

A.15 year old: 16-year-old

B. 15 years old; 16-years-old

C. 15-year-old: 16 years old

D.15 years old; 16-year-old

D是最佳答案。数词可以用来表示年龄，后面要加一个years old，前面用基数词。第一空用短语15岁，15 years old。第二空不能用短语，要用一个合成词，在句中的位置处于定语，因此又叫合成形容词，数字加连字符号加名词，名词只能用单数，再加连字符号，再加形容词，构成合成形容词。因此我们选D。

2

It is said that ____ young people may lose their abilities to hear after five years if they listen to MP4 players which are too loud for more than five hours a week.

A. thousand of B. six thousand of

C. thousands of

C是最佳答案。thousand前有具体数字时不能用复数，否则要用复数并加of。因此我们选C。

3

--Jackie Chan has donated ____ dollars to charity

--He is an example to us all

A. thousand B. thousands

C. thousand of D. thousands of

D是最佳答案。thousand前没有具体数字，并且后面的dollars是复数，要用复数加of。因此我们选D。

4

--Our school is going to hold the ____ Culture Festival.

--I see. And we can take part in ____ activities.

A. tenth, tenth B. ten: tenth

C. tenth, ten D. ten: ten

C是最佳答案。从题意来看，学校要组织第十次文化节，第一空应该用序数词；可以参加十个活动，第二空要用基数词。因此我们选C。

5

There‘s much meat in the basket but____of it is dirty.

A. two five B two fifth

C. two fives D. two fifths

D是最佳答案。这道题考分数词。分数词是基数词在前，序数词在后构成，当分子大于1时，后面的分母要用复数。因此我们选D。