问题
选择题
He speaks English well indeed, but of course not ________ as a native speaker.
A．as fluent
B．more fluent
C．so fluently
D．much fluently
答案
答案：C
not so\as ---as—“不如”；副词修饰动词。“他的英语确实很好，当然不如母语为英语的人说得流利。”所以答案为C。