知识点梳理

1. n. 百分之......

百分之二十 twenty percent

注：percent与数词连用时，无复数变化。

2. 常用结构：

数字 percent of （the）名词/代词

3. 注意：

百分数做主语时，谓语动词取决于后面的名词。其后接可数名词复数时，谓语动词用复数；其后接不可数名词时，谓语动词用单数。

知识点定向练习

1. —How many students in your school like reading?

—Seventy _____,I think.

A. percents

B. percent

C. percents

2. About_____the water on the earth can‘t be used directly.

A. 90 percent of

B. 90 percent

C. 90 percents of

3. One percent of the students_____trying to pass the math test.

A. is

B. are

C. was

4. Sixty percent of the people’s food_____from the sea.

A. come

B. are

C. comes

5. About eighty percent of milk_______(be) sent(被送)to the big factory every day.

6. 百分之五十的水都被汤姆喝了。

______ _______ ______ the water was drunk by Tom.

= _______ of the water was drunk by Tom.

答案↓

1. B
2. A
3. B
4. C
5. is
6. Fifty percent of ; Half