问题补充:
He’d better a doctor if he well.
A. to see, isn’t
B. see,feels
C. see,not feel
D. see,doesn’t feel
答案:
A. to see, isn’t
B. see,feels
C. see,not feel
(答案→)D. see,doesn’t feel
解析:had better 是 最好的意思,这两个词组合在一起相当于情态动词,也就是后面直接加动词原形,否定式在better后加not,再加动词原形。在条件句中表示将来动作,用一般现在时态.副词用能用作表语,故选D.