YOU SAID:

Sometimes my mother rides a bus with her legs open

INTO JAPANESE

私の母が彼女の足を開きバスに乗る時

BACK INTO ENGLISH

When you get on the bus, my mother opens her legs

INTO JAPANESE

私の母が彼女の足を開き、バスに乗るとき

BACK INTO ENGLISH

When my mom opened her legs, get on the bus

INTO JAPANESE

私の母が彼女の足を開かれたとき、バスに乗る

BACK INTO ENGLISH

When my mom opened her legs, get on the bus