6. Those who enter marathons soon learn that, to succeed in these grueling competitive events, runners must be in excellent condition, have unshakable self-confidence, and, most important of all, know how to pace yourself.
(A) know how to pace yourself
(B) is knowing how to pace yourself
(C) know how to pace themselves
(D) you must pace yourself(C)
(E) they must know how to pace themselves
觉的该选E,
Those who enter marathons soon learn that(,to succeed in these grueling competitive events,)runners must be in excellent condition, have unshakable self-confidence, and(,most important of all,) know how to pace yourself.
主语是those who...,谓语是have(有疑问的是为什么have前来个逗号呢?have 前没有主语的插入语呀!为了让句子结构更清晰?),还有后面的KNOW。我认为选E是因为self-confidence 后面的那个and前面有个逗号,这样的话后面的东东必须的接有主语的句子和前面的have unshakable self-confidence并列呀,如果没有逗号的话倒是可以省了主语,直接接动词!
请各位NN指点! |