题目内容：

John works very hard but he doesn't work _ Mary.A) as harder than B) so hard as C) as harder as
D) as hardly as 我认为B和D都对啊,

优质解答

只有B 正确
as +原级 + as 表示“和...一样”
否定； not so/ as +原级 + as 表示“不如” 所以排除A,C
词组：work hard 努力工作,而hardly 是几乎不