YOU SAID:

There is a dog in my car

INTO JAPANESE

私の車に犬があります。

BACK INTO ENGLISH

My car has a dog.

INTO JAPANESE

私の車は、犬を飼ってをいます。

BACK INTO ENGLISH

My car is a dog is.

INTO JAPANESE

私の車は犬であります。

BACK INTO ENGLISH

My car is the dog.

INTO JAPANESE

私の車は、犬です。

BACK INTO ENGLISH

My car is a dog.

INTO JAPANESE

私の車は犬です。

BACK INTO ENGLISH

My car is a dog.