no doubt 无疑，确实 No doubt we will go to a good university after three years’ of hardworking. 【拓展】 There is no/little doubt that… （几乎）可以确定……；（几乎）毫无疑问…… There is no doubt at all that we will all go to a good university after three years’ of hardworking. 【提醒】 当doubt与否定词如little, no, not等一起使用时，后面 的从句由that引导，否则由whether/if引导。