按要求把下列词语归类。 

提心吊胆    容光焕发    郁郁葱葱    面黄肌瘦    鹤发童颜  

奇花异草    崇山峻岭    心猿意马    忐忑不安

1．描写人物外表的：                                                                                                        

2．描写人物内心的：                                                                                                         

3．描写自然环境的：