YOU SAID:
I had to take my dog for a walk
INTO JAPANESE
私は犬を散歩に連れて行かなければならなかった
BACK INTO ENGLISH
I had to take my dog for a walk
INTO JAPANESE
私は犬を散歩に連れて行かなければならなかった
BACK INTO ENGLISH
I had to take my dog for a walk
That didn't even make that much sense in English.