A small question in English Hi Fellas, Which way is the correct way to say?(If the first one, why?) "three digit number or "three digits number" "seven hour difference" or "seven hours differe

Shaked

A small question in English Hi Fellas, Which way is the correct way to say?(If the first one, why?) "three digit number or "three digits number" "seven hour difference" or "seven hours difference" Thanx!

2014年11月1日 00:23

修正 · 6

I believe it is because they are collective nouns.

"One number with three digits", is restated as "A three digit number".

It is like "One classroom with six students" can be restated as " A six student classroom".

"A difference of seven hours" turns into "A seven hour difference"

2014年11月1日

*helps

2014年11月1日

That help too :) Thank you

2014年11月1日

three digit number and seven hour difference are correct, but I cannot explain why! :)

2014年11月1日

Anyone?

2014年11月1日

想進步快一點嗎？

加入此學習社群，來試做免費的練習吧！

Shaked

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