一道英语选择题，求详细解答并翻译

Question

I insist that a doctor_____ immediately.
A.has been sent for B. sends for C. will be sent for D. be sent for

Answer 1

D
我坚持马上派人去请医生来。
（ insist THAT 后的 省略SHOULD ，医生作主语，被请来，要用被动语态）

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Answer 2

【选择】D. be sent for

【解析】

　　如果名词性从句（包括宾语从句、主语从句、表语从句和同位语从句）表示意见、建议、命令、决心、权利等个人态度，从句的谓语需要用虚拟语气“should + 动词原形”或者省略 should 直接用动词原形。这类从句往往出现在主句谓语动词是suggest, advise, propose, order, demand, command, insist,claim 等或主句中含有上述动词的同源名词 suggestion, advice, proposal, order, demand, command, insistence,claim 等。

　　另如：

He suggested that we (should) go out for a walk. 他建议我们出去走走。【宾语从句】

His advice is that you (should) not violate other’s privacy. 他的建议是你不该闯入私室。【宾语从句】

It is the government's proposals that this act (should) be abolished. 政府的提案是废除该项法案。【主语从句】

Her parents were united in their insistence that she (should) go to college. 她的父母亲一致坚持认为她应该上大学。【同位语从句】

Answer 3

选D解析：该句的考点应该是在表示命令、要求、建议的词后，动词用should do，should可以省略。insist在这里就有坚持要求的意思，所以选D。
insist 用法与suggest 相似。insist作“坚持”说时，要用陈述语气；作“坚决主张；坚决要求”讲时，用虚拟语气。如：
When the son suggested that they should go to the park on Sunday, the expression on his father’s face suggested that he agreed with him.
当儿子提议星期天去公园时，父亲用表情表示了默许。
They insisted that he （should）be present at the ceremony.
他们坚决要求他出席这次典礼。
He insisted that he was innocent.=He insisted on his innocence.
他坚持说自己是无辜的。

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Answer 4

D. 因为insist后面带that 宾语从句谓语必须是should do 或者should be done 的结构，should 可以省略。这题是 医生被找来， 是被动。