连词成句while,took,we,down,weren,off,walking,the UFO,the street

连词成句while,took,we,down,weren,off,walking,the UFO,the street while the boy was walking down the street,the UFO landed同义句4 while the boy was walking down the street,the UFO landed （while the boy was walking down the street）,the UFO landed 对 While the boy was walking down the street,the UFO landed,对Wh while Tom saw the UFO,he was walking down the street with hi I,while,was,down,the,walking,street,alien,an,of,out,got,UFO, 状语从句I saw a UFO while i was walking down the street yesterda the boy was walking down the street when the UFO landed同一句 walk down 在此句中又该如何翻译:We were walking down the street. 英语翻译while the boy was walking down the down the street the U I was walking down the street when a UFO landed down.