问题
选择题
We still cannot persuade him to give up smoking ____ hard we tried.
A．so
B．how
C．though
D．however
答案
答案：D
本题考查however引导的让步状语从句。however引导的让步状语从句后面直接接形容词或副词。so和though则不可以。
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We still cannot persuade him to give up smoking ____ hard we tried.
A．so
B．how
C．though
D．however
答案：D
本题考查however引导的让步状语从句。however引导的让步状语从句后面直接接形容词或副词。so和though则不可以。