英语分数后面是接is 还是are ,是否根据分数后的名词可数还是不可数,具体什么时候用are,什么时候用is?

问题描述:

英语分数后面是接is 还是are ,是否根据分数后的名词可数还是不可数,具体什么时候用are,什么时候用is?
1.Our bodies are 65percent water.我们人体含65%水分.
2.Seventy-five percent of the earth'ssur- face is covered by water.地球表面的75%被水覆盖着.
3.Eighty-five percent of the students in English department are girls.英语系85%的学生是女生.
为什么有的用are ,有的用is 具体什么时候用are,什么时候用is?

这个其实是看主语的单复数.
1.Our (bodies) are 65percent water.复数形式+are
2.Seventy-five percent of the earth'ssur- face is covered by (water).不可数+is
3.Eighty-five percent of the (students) in English department are girls.复数形式+are