被动语态就是 被.着
主语+过去分词 过去分词就是动词+ed 当然也有特殊的,需要特别记忆.
例子：主动 ;The children gave the foreign guests a warm welcome
被动：The foreign guests were given a warm welcome by the children
孩子们热烈欢迎外国游客
外国游客被孩子们热烈欢迎