1704931620
There was no doubt that he was a fine scholar. 毫无疑问他是一位优秀的学者。
1704931621
1704931622
I have no doubt that we shall be able to do something for you. 我不怀疑我们能为你做点什么。
1704931623
1704931624
在肯定句中doubt后面可跟whether引起的从句：
1704931625
1704931626
There is some doubt (as to) whether she will come on time. 她是否准时来有点儿让人怀疑。
1704931627
1704931628
有时也可作可数名词：
1704931629
1704931630
A sudden doubt came to her mind. 她脑中突然产生一点儿怀疑。
1704931631
1704931632
She had her doubts whether he would come. 她有点儿疑虑他是否会来。
1704931633
1704931634
no doubt和without (a) doubt都可用作状语，表示“毫无疑问”：
1704931635
1704931636
Mrs. Warren, no doubt, has her merits. 华伦夫人毫无疑问有她的优点。
1704931637
1704931638
No doubt it is very absurd. 毫无疑问这是很荒谬的。
1704931639
1704931640
Without (a) doubt you have been working very hard. 毫无疑问你工作一向努力。
1704931641
1704931642
doubtless也表示同样的意思：
1704931643
1704931644
It was doubtless his own fault. 毫无疑问这是他自己的错。
1704931645
1704931646
Doubtless he would have inside news. 毫无疑问他会有内幕消息。
1704931647
1704931648
doubtful则表示“怀疑的”、“值得怀疑的”：
1704931649
1704931650
He seemed a little doubtful. 他似乎有点儿怀疑。
1704931651
1704931652
She was doubtful of his good intentions. 她对他的良好愿望有点儿怀疑。
1704931653
1704931654
He’s doubtful (about) whether he can afford it. 他怀疑他是否出得起这笔钱。
1704931655
1704931656
The results of the experiment are doubtful. 实验结果值得怀疑。
1704931657
1704931659
332 downstairs
1704931660
1704931661
downstairs可用作副词，表示“到（在）楼下”：
1704931662
1704931663
He went downstairs to breakfast. 他到楼下去吃早饭。
1704931664
1704931665
Is anyone downstairs yet? 楼下已有人了吗？
1704931666
1704931667
She is waiting downstairs. 她在楼下等
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1704931669
它也可用作形容词，表示“楼下的”：
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