it could be that we could even see them again
题目
it could be that we could even see them again
请问,that前面为什么是it could be that引导的什么宾语从句?
答案
could be表虚拟语气,that引导的是表语从句,作be的标语
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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