YOU SAID:

Today I bought a car, I regretted it

INTO JAPANESE

今日私は車を買って、それを後悔しました。

BACK INTO ENGLISH

Today I bought a car and I regret it.

INTO JAPANESE

今日、車を購入し、それを後悔します。

BACK INTO ENGLISH

And buy a car today, and will regret it.

INTO JAPANESE

今日、車を買うし、それを後悔します。

BACK INTO ENGLISH

Today, buying a car and then regret it.

INTO JAPANESE

今日、車を買うと、それを後悔します。

BACK INTO ENGLISH

Today, when I buy a car, I regret it.

INTO JAPANESE

今日、私は車を買うとき、私はそれを後悔します。

BACK INTO ENGLISH

Today, when I buy a car, I regret it.