Number + も【も】

The pattern Number + も is used to emphasize quantity, expressing that an amount is surprisingly large (or small in negative sentences). The nuance changes depending on whether the sentence is affirmative or negative.

Affirmative: "as many as" / "as much as"

In affirmative sentences, Number + Counter + も emphasizes that the amount is more than expected – the speaker finds it surprisingly large.

Without も, these sentences would simply state facts. Adding も conveys the speaker's surprise or emphasis that the number is a lot.

Negative: "not even"

In negative sentences, Number + Counter + も + Negative emphasizes that not even that small amount exists or happened. This is especially common with いち一 (one) + a counter, meaning "not even one."

The pattern 一 + Counter + も + Negative is a very common way to say "none at all" or "not a single one."

Comparison with just a number

Compare:

• ほん本をじゅっさつ10冊かった買った。 – I bought 10 books. (neutral statement)
• ほん本をじゅっさつ10冊もかった買った。 – I bought as many as 10 books! (emphasis – that's a lot!)

The particle も replaces the particle を (or が) in these constructions. When the number phrase would normally take は, に, or で, those particles are typically dropped or placed before the number: