you shouldn't leave kids at home alone.(改为被动语态)--kids?at home alone.并说明为什么

you shouldn't leave kids at home alone.(改为被动语态)--kids?at home alone.
并说明为什么

Kids shouldn't be left at home alone.
孩子不该被单独留在家里.
leave变成left

kid should be left by you at home alone