1. Meaning: firstly, I expressed my homesickness, secondly, I expressed my gratitude to the native land, and finally I expressed my feeling of belonging to the native land.
2. There are two meanings of heaviness: First, the old man's voice is deep and his words are heavy, which sounds gloomy. Second, it told the author's heart, aroused the author's * * * sound, and inspired the author's equally sad homesickness.
3. (I don't know, there is no such sentence in the article I read)
It is suggested to answer from the aspects of people's dependence on their hometown and local culture.
4. The poem at the beginning emphasizes the old man's strong yearning for his hometown, which leads to the following description of homesickness. The poem at the end points out the theme, sublimates the emotion, gives people a long reading feeling, adds poetry to the article and deepens the depth of emotion.