It is necessary for one to know what are good table manners because they can help one succeed in his life.从句不是应该用陈述句语序吗?
问题描述：
It is necessary for one to know what are good table manners because they can help one succeed in his life.从句不是应该用陈述句语序吗?可不可以改成：
It is necessary for one to know what good table manners are because they can help one succeed in his life.
答
不能、、因为你指的那个从句缺少的是主语成分、所以这么写就是陈述语序.而要是改成下面的样子、what指代的成分就是宾语了.意思就完全不同了!