[JLPT grammar] why is 多い人 incorrect?

Today I am going to share the Q&A quoted from my JLPT N5 course!


[Student’s question]


why is 多い人 incorrect?
I understand i-adjectives come before the noun (e.g. 大きい家 a big house).
Did I learn wrong?




[My Reply]


Normal i-adjectives can come before a noun, but not 多い (おおい).

That’s because 多い is used as an “amount indicator” in some sentences, not directly modifying the noun in the way other i-adjectives do.

This is similar to how 先生が一人います (“There is one teacher”) is correct, but 一人先生がいます is incorrect.
一人(ひとり) ; a counter for people(amount indicator)

Like an amount indicator, if you add の, it can be used with the noun. Therefore:

So, you should say:
・人がたくさんいます。(Here, たくさん is used as an adverb.)

Also, if a sentence containing 多い modifies a noun, 多い may come before that noun, acting like a relative clause:

People who are often late.

A day with a lot of work


I hope my answer helps you.😊



In the JLPT course, you can ask me any questions as much as you want.
I will teach you until you get it!