YOU SAID:

i need to by a pair of socks for my father

INTO JAPANESE

私は私の父のために靴下のペアでする必要があります

BACK INTO ENGLISH

I need to be in a pair of socks for my father

INTO JAPANESE

私は父のために靴下を履いている必要があります

BACK INTO ENGLISH

I need to wear socks for my father

INTO JAPANESE

私は父のために靴下を履く必要があります

BACK INTO ENGLISH

I need to wear socks for my father