other N3 common casualpolitewritten

何〜も — as many as ~ / many ~

何〜も・なん〜も

Builds on 助数詞

Meaning

as many as ~ / many ~ / over and over — emphasizes a large number using 何 + counter + も

彼かれは何度なんども挑戦ちょうせんした。

He tried many times over.

Attaches to	Form	Example
何 + counter + も	何なん + 助数詞じょすうし + も	何回なんかいも (many times), 何人なんにんも (many people)

図書館としょかんで何冊なんさつも本ほんを借かりた。

I borrowed many books from the library.

その映画えいがは何回なんかいも見みた。

I've seen that movie many times.

Here 何 is an indefinite 'some (large) number,' not a question. In an affirmative sentence 何+counter+も = 'as many as / many'; the bigger scale uses 何十なんじゅうも・何百なんびゃくも ('dozens / hundreds of').

Don't confuse with 何なにも + negative ('nothing': 何なにも食たべない), which uses bare 何 + も rather than 何 + counter + も.

Jengo shows 何〜も the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.

Sources Compiled with reference to A Dictionary of Advanced Japanese Grammar.