Does anyone have this phrase in English to correct participial phrases?

Every night after dinner Grandfather arises from the dinner table and, excusing himself, retires to the porch alone. While sitting alone in his porch chair, we stay at the table and talk about grandfather. Since their Grandmother died, Grandfather's attention wanders. The changes are subtle but still noticeable. Then, passing as quickly as it came, grandfather will emerge from his melancholy mood and he will become his old cheerfully, and energetic self. Last night I asked him about his evening ritual. He said, "I just like to take a moment every day." Seated on the porch tonight, I watched him quietly from the backyard, and for the first time, he did not seem sad to me.