知道英语里有这样两种表达：There is no doubt that...以及There is some doubt whethe

知道英语里有这样两种表达：There is no doubt that...以及There is some doubt whethe

doubt的肯定形式后接whether/if从句,否定和【疑问形式】后接that从句
There is no doubt前面有no使这个句子成否定句所以用that，
而肯定句there is some doubt 就得用whether
同时【疑问句】后接that从句。追问也就是说there is some doubt that 也是正确的，对吗追答不，你这几句话是肯定句所以要用whether，再看一下上面的规律。