He learns Japanese for business purposes.

他学习日语是为做生意。

youdao

She learns Japanese for business purposes.

她学习日语是为做生意。

youdao

He learns not only English but also Japanese.

他不但学习英语而且还学习日语。

youdao

Yet it doesn't go far enough for us to feel much of anything as Algren goes through all sorts of hell on a mission most improbable, first as Katsumoto's captive (he learns to speak Japanese in a matter of months), and later as his acolyte, ad hoc strategist and joyous -- except not joyous enough -- companion in arms, if need be to the death.

WSJ: Cruise Fights for Honor in 'Last Samurai'