به نام خدا
طرف راست فلش مجهول می باشد:
to do ---------> to be done
will do ---------> will be done
shall do ---------> shall be done
do ---------> be done
can/could/ may/ might/ should/ ought to/ have to/ has to do ..... ---------> ..... be done
has done ---------> has been done
have done ---------> have been done
had done ---------> had been done
EX.
John has finished his assignment.
His assignments have been finished by john.