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问题 在a day前为什么不用in

An apple a day keeps the doctor away.在这个句子里“a day”前为什么不用in呢？ An apple， a day都是名词性的词组能连在一起用吗？

问题 stand in a/the circle的问题

The children stood in ______ circle and danced to music. A. a      B. an        C. the      D. 不填请问为什么不能选C，就说站在这个圈里?

问题 作后置定语的不定式为什么要加上介词(in, on等）

1. Give me a piece of paper to write on.write 是及物和不及物动词，为什么不定式作定语时还要加上 on?2. My mother is looking for a house to live in.live 是不及物动词，加 in 吗？

问题 32.8 metres high and 1,913 metres in circumferences是作什么成分

The centre of the park is QiongIsland,32.8 metres high and 1,913 metres in circumference.请问32.8 metres high and 1,913 metres in circumferences是作什么成分呢？

问题 spend sometime in doing sth这个介词短语如何分析

 老师在这个句式中in我们可以省略，但是要如何理解这个介词短语呢？是做的状语么？

问题 请教此处in witness的用法，是状语吗

I'm telling you last night was like umm, all my birthdays, both graduations, plus the barn-raising scene in witness请教下这句话的语法，这是老友记里的一句台词，感谢高手指点

问题 in+what特殊疑问句是做定语从句吗

原句:A gap in what aspect does "digital divide" refer to？ 翻译:“数字鸿沟”指的是什么方面的差距？

问题 in ancient China在这里是时间状语还是地点状语

There are many impressive stories about this in ancient China.在中国古代，有许多这样感人的故事。这里可以用are吗？

问题 in/on the bottom of the bottle中介词的选用

Decant the wine carefully, so that you leave the deposit ______ the bottom of the bottle. A. in    B. on请问如何填？是填 in 还是 on？如何区分呢？谢谢！

问题 “in order or anything”的理解与“sounds interesting”为何没有

请问专家：问题一：I don't have much background in order or anything.这里的in order or anything怎么理解呢？问题二：sounds interesting为何没有it作主语也可以单独用，而且是写成sounds而不是sound？（备注：现在网站暂时无法充值鲜花，等系统...

问题 完成体的时间状语问题（have repaired the road in three days）

【1】They have repaired the road in three days.请问后面的in对不对。【2】since 引导的时间状语, 能否用作表示"对现在的影响完成体"的时间状语？

问题 in association with的用法

Increased vertical oxygen gradients after ~15.6Ma and after 13.8Ma indicate increased production of Southern Component Water (SCW) in association with East Antarctic Ice Sheet (EAIS) growth.这句话是说 1.垂向梯度的增加表示的是 和EAIS增加有关的increased production of Southern Com...

问题 in their effect中的their指代又是什么

It is impossible to measure the importance of Edison by adding up the specific inventions with which his name is associated. Far-reaching as many of them have been in their effect upon modern civilization, the total effect of Edison's career surpasses the sum of all of them. as many of them指的是...

问题 fully, in command of the situation分别作什么成分？

He felt fully in command of the situation.

问题 ​in recent years和over recent years意思一样吗

in recent years和over recent years意思一样吗？