Student or Learner
dear all in this sentence
He missed the castle, with its secret passageways and
ghosts, his classes (though perhaps not Snape, the Potions master),
the mail arriving by owl, eating banquets in the Great Hall, sleep-
ing in his four-poster bed in the tower dormitory,
why they use ing in arrive eat sleep
What things did he miss?
He missed the castle, his classes, the mail arriving by owl, eating banquets, and sleeping in his ....
All the underlined things are nouns.
You can not say 'He missed eat banquets...', 'He missed the mail arrive by owl', or 'He missed sleep in his...bed...'.