YOU SAID:

I have to go take my dog out for a walk

INTO JAPANESE

犬を散歩に連れて行かなければならない

BACK INTO ENGLISH

Must take the dog for a walk

INTO JAPANESE

犬を散歩に連れて行く必要があります

BACK INTO ENGLISH

Need to take the dog for a walk

INTO JAPANESE

散歩のために犬を連れて行く必要があります

BACK INTO ENGLISH

It is necessary to take the dog for a walk

INTO JAPANESE

犬を散歩に連れて行く必要があります

BACK INTO ENGLISH

Need to take the dog for a walk

INTO JAPANESE

散歩のために犬を連れて行く必要があります

BACK INTO ENGLISH

It is necessary to take the dog for a walk