YOU SAID:
I need to buy a shirt for graduation
INTO JAPANESE
卒業のためにシャツを買う必要がある
BACK INTO ENGLISH
I need to buy a shirt for graduation.
INTO JAPANESE
私は卒業のためにシャツを買う必要があります。
BACK INTO ENGLISH
I need to buy a shirt for graduation.
You've done this before, haven't you.