过去分词形容词化
有些过去分词源于系表结构，分词已经形容词化，相当于形容词
be lost in; be interested in; be tired of ; be satisfied with ;
be excited about; be faced with; be dressed in ；be seated
be buried in; be absorbed in;
be determined to do sth. ; be lost in; be interested in;
be tired of ; be satisfied with ; be excited about; be faced with; be dressed in ；be seated
