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问题 句中on的用法

Ongoing border restrictions on large sections of Queensland, New South Wales, Victoria and South Australia that have no Covid-19 cases are posing major challenges on agricultural supply chains. On agricultural supply chains 中的on 为什么不用 to? 一般不是用pose...to...吗？用on 和...

问题 There came...是倒装句和存在句

There came a scent of lime-blossom. 飘来一阵菩提树的花香。这是倒装句还是存在句？there没有实际意思？

问题 thus后面接过去分词还是现在分词

The oil spill has killed off billions of microscopic sea plants, thus threatening marine life further up the food chain. 这里为什么用 thus threatening，可以用 thus threatened 吗？ 

问题 on和off表附近的区别

a man's store on/off Fifth Avenue.     The hotel is on the coast.   An island off the coast of France.请问off和on在表示“在……附近”时的区别？谢谢

问题 这里的and用的没道理吧

《经济学家》中的一个句子：Yet Russia’s vaccine diplomacy has stumbled, and not only because of delayed production and shipment. 看作省略it/that/this is？谢谢各位大咖专家老师！

问题 should可以引导从句或是做连词吗

By touching them, those blessed by the world will receive the gift of life anew should they stumble and fall.请问怎么理解should后面的话呢？这里的should是什么用法？ 

问题 such...as 用法请教

Mrs. Gardiner about this time reminded Elizabeth of her promise concerning that gentleman, and required information; and Elizabeth had such to send as might rather give contentment to her aunt than to herself.请教老师：麻烦老师讲解一下这里的such...as和rather...than用法含义。谢...

问题 once引导虚拟语气

... the bet would be payable once the LHC had produced enough data to be sure of the outcome。求教各位老师，这句话的黑体部分是once引导的虚拟语气吗？如果是的话，是错综虚拟吗？但是好像意思说不通。后半句我一开始想的是单纯的过去完成时。

问题 请教一个分词问题

...ue business partners, especially considering he spent that time living out of his car and eating meals begged from friends.想请教这句话，最后使用过去分词back的修饰前面名词meal，但beg在这里没有被动语义，是否应该使用现在分词begging代替？

问题 用between和among表示“多人之间”

请教各位老师：初三月考试卷上有一道选择题：We should keep this secret ______ the three of us.选项中有among，也有between，标答说是between. 请问用among就错了吗？

问题 用between和among表示“多人之间”

请教各位老师：初三月考试卷上有一道选择题：We should keep this secret ______ the three of us.选项中有among，也有between，标答说是between. 请问用among就错了吗？

问题 exist independent 还是 exist independently

高中英语译林版必修二P26（L31）有这样一句话：Neither can exist independent of the other.请问这里为什么不用 exist independently？修饰动词不是应该用副词吗？为什么用形容词？

问题 carry balanced on one's head 是什么意思

Peggy, the milk maid, was going to the market. There she planned to sell the fresh sweet milk in the pail that she had learned to carry balanced on her head.As she went along, she began thinking about what she would do with the money she would get by selling the milk.这段话里的 learned to carry...

问题 to what's new...这是省略了what后面的定从引导词that吗

The conversation eventually turned to what’s new in research and development.to what's new......这里省略了what后面的定从引导词that吗？

问题 as表示“……之后”的意思

...“......之后”，但是词典上并没有这样的用法，而只有as of才表示“......”之后，那这里的as该如何理解呢？