YOU SAID:

i want a new sock but just one

INTO JAPANESE

私は新しい靴下が欲しいが、ただ一つ

BACK INTO ENGLISH

I want a new sock, but there's only one

INTO JAPANESE

私は新しい靴下が欲しいが、1つしかある

BACK INTO ENGLISH

I want a new sock, but there is only one.

INTO JAPANESE

私は新しい靴下が欲しいが、1つしかありません。

BACK INTO ENGLISH

I want a new sock, but there is only one.