except和except for 的用法应注意点： except用于单一的或同类的事物上的比较： He went to school every day except Sunday. except for 强调整体不错,但有一点局部的不好.用于不同类的比较: Your conposition is good except for bad spelling . except还可以和that,when,what连用后面接句子: He went to school every day except when it is Sund……。