2. Empathy is used to express the author's thoughts and feelings that he is forced to find himself nowhere to go.
3.( 1)① Write the tranquility of the environment and the beauty of the early summer scenery with images of scenery (the beauty of lakes and mountains, Liu Yin's oblique wild trails, and the depth of water and grass); ② Set the silence by moving (herons descending to earth); ③ Set the silence by sound (singing).
(2) (1) The first six sentences use the scene of "early summer seclusion" to express the joy of being at ease (1 minute) (2) The ending is "sigh". One is to lament that people with lofty ideals are empty and old, and do nothing to serve the country; The second is to lament that old friends are scattered, tired, lonely and disappointed.