(whether)this material can be used in our factory has not been studied yet 括号里为什么不能用that
题目
(whether)this material can be used in our factory has not been studied yet 括号里为什么不能用that
如题,
答案
主语从句.whether有是否的意思,that引导主语从句,补充当句子成分,不翻译.
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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