adv.怀疑地；含糊地
doubtful───adj.可疑的；令人生疑的；疑心的；不能确定的
doubtfuls───怀疑者
boastfully───adv.自夸地
dolefully───adv.悲哀地；寂寞地
doomfully───倒霉的
doubtably───可疑的
doubtingly───怀疑地
dutifully───adv.忠实地；忠贞地；尽责地，忠诚地
fruitfully───adv.产量多地；肥沃地
Keeton shook his head doubtfully.───基顿将信将疑地摇了摇头。
It's worth trying," they said doubtfully.───这值得一试。”他们迟疑地说。
I think I knew them," said Michael rather doubtfully.───我想我认识他们。”迈克尔不太确定地说。
Father looked doubtfully at me for quite a while. Then he turned and went back to his room.───父亲狐疑地看了我一会儿，转身去了房间。
'I suppose it is, ' I said doubtfully, still unable to shake off completely the depression of my spirits.───希望如此，’我说得很疑惑，我始终难以摆脱沮丧的心情。
'I--I'm a little girl, ' said Alice, rather doubtfully, as she remembered the number of changes she had gone through that day.───“我是一个小姑娘。”爱丽丝拿不准地说，因为她想起了这一天中经历的那么多的变化。
Budd shook his head doubtfully and walked towards the door to watch the busy shop opposite.───他向门口走去，看到对面的理发店很是红火。
He looked at me doubtfully, and I knew myself that the question was beside the point.───他疑惑地看着我，我知道我提出的问题偏离了话题。
As he paid this compliment to the merit of the absent charmer, MR. Brass came to a halt, looking doubtfully towards the light.───布拉斯先生这样称赞了不在场的迷人精一番之后，突然停下脚步，怀疑地望着灯光。
Christine regarded the improvised bank draft doubtfully.
As Joe and Rex looked on doubtfully, I began an inspection tour of the entire raft.
Brittles looked doubtfully at Mr. Giles.
Jastrow glanced doubtfully from the Palestinian to his niece.
"Are you telling me the truth?" he asked doubtfully.
Ingram looked doubtfully at the long table, rocking up and down like a lugger in a gale.
His eyes rested on her doubtfully.
The fox looked at the little mosquito doubtfully.
Keeton shook his head doubtfully.