What is the function of を in the sentence:


Why can't it be written without it, like:


'' is a particle that is used mainly as an object particle to

indicate a direct object of action.

Therefore, it needs to be used as you are asking what the object of doing is in the question.

I am doing my homework.

could be translated to


In formal Japanese, it is better not to omit 'を' in the sentence.

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  • Without the particle, you would sound like Tarzan. "Tarzan hungry!" – kurakura88 Aug 15 '16 at 10:07
  • @kurakura88 Or probably impolite as in "何していますか?" – Rathony Aug 15 '16 at 14:30

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