YOU SAID:

you have to brush your teeth at least twice a day or else you'll have to go back to the dentist

INTO JAPANESE

少なくとも1日2回は歯を磨く必要があります。そうしないと、歯科医に戻る必要があります。

BACK INTO ENGLISH

You should brush your teeth at least twice a day. Otherwise, you will have to return to your dentist.

INTO JAPANESE

少なくとも1日に2回は歯を磨くべきです。それ以外の場合は、歯科医に戻る必要があります。

BACK INTO ENGLISH

You should brush your teeth at least twice a day. Otherwise, you will need to return to your dentist.

INTO JAPANESE

少なくとも1日に2回は歯を磨くべきです。それ以外の場合は、歯科医に戻る必要があります。

BACK INTO ENGLISH

You should brush your teeth at least twice a day. Otherwise, you will need to return to your dentist.