供参考取消括弧内的文字However ,cars also cause pollution . Poisonous (Poisous) gases from cars are a real (really) danger to the environment and very bad for people's health. Owning a (Own car) ,therefore ,has both advantages and disadvantages注﹕Poisous 并错really danger ﹕danger 是名词﹐要用形容词﹐所以改为 realown car﹕ 改为动名词...
