天啊,語病太多了啊!我給你修改一下：Autumn;it is from the middle of September to late December.It is the most attractive season in Canada when there are white clouds in the high sky and red leaves upon the hills.But when you take a close look at these leaves,you will find that they are not the same red; some are purplish,some dark,some fiery,and some orange.What's more,the different colors of green gives us another extremely beautiful view.主要是根據(jù)你的意思意譯的,盡量忠實于你的意思,盡量用你用過的詞匯.