YOU SAID:

I have to go to the store to buy mangos for my best friend at three in the afternoon.

INTO JAPANESE

午後3時に親友のためにマンゴーを買いに店に行かなければなりません。

BACK INTO ENGLISH

I have to go to the store to buy mangoes for my best friend at 3pm.

INTO JAPANESE

午後3時に親友のためにマンゴーを買いに店に行かなければならない.

BACK INTO ENGLISH

I have to go to the store to buy mangoes for my best friend at 3pm.