2, In the process, he enjoyed himself thoroughly and kept telling everybody how much he hated hospitals.
keep doing sth. 不间断的,不停的做某事
keep on doing sth. 反复、重复干某事(中间可以有短暂的暂停) (keep: vi.)
Don't keep on asking silly questions.
He kept smoking all the while.
He kept on smoking all the while.
keep +宾语+动词ing形式,keep on 不能用于该句型
He kept me waiting for an hour.
I'm sorry to have kept you waiting so long.
3,He spent a miserable day in bed thinking of all the fun he was missing.
think of:想到,想起,想着
When I saw you I thought of my sister.
think of doing sth.
He is thinking of setting up a school.