The doctor did what he could ( ) the dying man.此句中情态动词could后为什么不用动词原形而是不定...The doctor did what he could ( ) the dying man.此句中情态动词could后为什么不用动词原形而是不定式结构呢?

what did the doctor say? What did the doctor do to you意思,回答, The doctor did what he could（）the dying man.AsaveThe doctor did what he could（）the dying man.AsaveBto saveCsavedDsaving Did you see the doctor? The doctor did what he could do for the dying man .有一处错误,是什么啊 The doctor did what he could ___ the boy's life.A to save B save C saved D saving the doctor did what he could___ the dying man A save B to save C saved D saving 求解析 The doctor did what he could （to save）the child.为什么是to save?而不是是save? Mom,what did the doctor say?.-Mom,what did your doctor say?-He advised me to live the air is fresher.A.in where B.in which C.the place where D.where为什么要选D, Did she see the doctor?为什么用did Did she see the doctor?为什么用did急! 11.The doctor did what he could _________________that child.A.save B.to save C.saved D.saving The doctor did what he could_the dying man.A.save B.to save 哪个正确?怎么翻译? The doctor did what he could___the dying man.A:save B:to save C:saved D:saving what did the doctor say about your mother's illness?He suggested that she ___an opreation at once. -Mom , what did your doctor say ? -He advised me to live where the air is fresher .汉语翻译 情态动词+to 比如这句 The doctor did what he could to save her baby.为什么要加to? The doctor did not r____ the truth to the patient