高一英语新题型 改错 有十处 帮我找找呗

高一英语新题型 改错 有十处 帮我找找呗
On my way home on the bus,I saw an old man to get on with his grandson.He was carrying the boy schoolbag and violin.I offered my seats to the old man at once.Therefore,the boy sat down first.the old man has to stand nearby.After a while,the boy shouted to her grandpa for water and then dropped the empty bottle over the bus.When I saw this ,I got much angry.I think the boy should only respect and take care of the old man but also keep an environment clean.