勉強する vs 勉強をする

Was watching Japanese Ammo with Misa’s beginners grammar video #8 and at the very end she uses the sentence example 勉強するのが嫌いでした。 And I was wondering since する is the verb for “do” why she did not put を after 勉強? If anyone can help me with this it’ll be much appreciated. Thanks. I’m only 1 month into studying Japanese for reference.

There is a whole category of verbs that are a noun followed directly by する. The combo noun+する is the verb. This is one instance of that.

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https://www.imabi.net/suruverbs.htm

勉強 is a する verb. The above link explains them a bit but if you search “suru verbs” you should find lots more information.

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This video explains why sometimes you drop the を

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That’s a slightly different question I think, because technically 映画見る is ungrammatical, but it is natural to hear and use in casual speech. 勉強する on the other hand is grammatical and normal in any register.

The main difference with 勉強する and 勉強をする is whether the preceding grammar demands one or the other.

See these for instance

日本語を勉強する 〇
日本語の勉強をする 〇
日本語の勉強する ✕
日本語を勉強をする ✕

And then, applying the concept from that video, 日本語勉強する can be heard in natural speech, but is technically ungrammatical.

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should there not be a X after this one? Just assuming you missed it

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Yeah, I added it as you posted that I think.

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