doubt用法

doubt作名词意为疑问；不确定；不相信。作动词意为不能肯定；认为…未必可能；怀疑；不相信。第三人称单数为doubts，复数doubts。现在分词：doubting，过去式：doubted，过去分词：doubted。doubt可用作可数名词，也可用作不可数名词。

例句1.This raises doubts about the point of advertising.这对做广告的意义提出了疑问。2.Others doubted whether that would happen.其他人认为那未必会发生。3.No one doubted his ability.没有人怀疑他的能力。4.No one directly involved with the case doubted him.与此案直接相关的人中没有人怀疑他。5.A referendum showed beyond doubt that voters wanted independence.全民公决无疑显示选民支持独立。