listen的ing形式,listentomusic

经常出现的时间是:now 有时候,也会在句子开头出现look, listen
判断依据:句中往往有now,look,listen等词.
look! they are running . 2. listen!
inherfreetime a watchtvb readingbooksc listeningmusicd plays
listen! the bird is sing ing.