关于主语从句的题目...It's uncertain ___(填that还是whether) he will go to Beijing.

问题描述:

关于主语从句的题目...It's uncertain ___(填that还是whether) he will go to Beijing.
这里是“他去北京这一事实不确定”呢 还是“他是否去北京不确定”呢

whether
对于他是否去北京我们还不确定.
表示“是否”要用whether/if 引导从句
转换成主语就是:
whether/if he wil go to beijing is uncertain.