Ask him whether he would accept the post.是什么意思？

Ask him whether he would accept the post.

问问他是否愿意就任该职。

ask

vt.& vi. 问，询问，需要，要求，请求，邀请；vt. 邀请，请求允许，要价，询问；vi. 请，邀请，询问，要求；

例句
She knew who to ask about finding an abortionist.
她知道向谁去打听找一个为人堕胎的。

him

pron. (he的宾格)他；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。

whether

conj. 是否，无论；

例句
They had their tablets analysed to find out whether they were getting the real drug or not.
他们将药片拿去化验以查明他们得到的是否是真药。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

would

aux. 将，将要，愿意，会，打算，大概；v. (will 的过去式，用于转述)将；

例句
I would love to go abroad this year, perhaps to the South of France.
我今年很想出国，可能是去法国南部。

accept

vi. 承认，同意，承兑；vt. 接受，承认，承担，承兑；

例句
Eventually Sam persuaded her to accept an offer of marriage...
最终萨姆说服她接受了求婚。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

post

n. 邮件，邮政，柱，桩，杆，岗位；vt. 张贴，宣布，设岗，邮寄；vi. 快速行进；adj. 有关赛跑（或赛马，赛狗）起点标志的；adv. 〈外〉在后，用急件[驿马]，赶紧地，火速地；

例句
The post will give him a powerful political base from which to challenge the Kremlin...
这个职位将给他提供一个强有力的政治基点来挑战克里姆林宫。