YOU SAID:

man i do not know how to do this

INTO JAPANESE

男は私はこれを行う方法がわからない

BACK INTO ENGLISH

man i don't know how to do this

INTO JAPANESE

やり方を知らない

BACK INTO ENGLISH

I don't know how to do this.

INTO JAPANESE

やり方を知らない

BACK INTO ENGLISH

I don't know how to do this.