As soon as the light in the bedroom went out there was a stirring and a liuttering all through the farm buildings.这里的stirring和fluttering并不像painting和swiming那样变成一个真正意义的名词，为什么也要用冠词a，而且它的单复数有什么意义呢？
Although it seemed to take all her strength, the patient summoned up a
smile to her mom.老师，请问这里的it是形式主语，真正主语是：the patient
summoned up a smile to her mom 吗？但是 the patient summoned up a
smile to her mom 应该是主句才对呀，怎么理解这个it呢...
1.The city suffered heavy losses in the tornado.(lose)词典中标注lose [U][C,usually sing] 损失,那为什么该题lose用复数形式呢?2.If given the same treatment again, he is sure to get well.(give)这里为什么用given而不是being given呢？
"Not out of amity, but rather because of an absence of tenable
alternatives, both countries will need to find a new and enduring framework for
managing the relationship," the Brookings Institution said in a policy
analysis titled "Rising to the challenge: Navigating competition, avoiding
crisis, and...
...g a glyphosate-resistant crop commits a farmer to using that
herbicide for the season, probably to the exclusion of all other herbicides and
other weed-control practices.请教一下曹老师，这个句子里我觉得to the exclusion of all other herbicides and
other weed-control practices是和to ...
Still, when Lenore Skenazy, a columnist for The New York Sun, wrote about letting her son take the subway alone to get back to her Manhanttan home from a department store on the Upper East Side, she didn't expect to get hit with a wave of criticism from readers有3个疑问：1. 介词短语 fro...
That's about how high an object would have to be orbiting straight up from the equator to constantly remain directly above the exact same spot on the rotating planet Earth."would have to be orbiting"是什么时态？为什么要使用这种时态？
The total energy given off by the devastating earthquake was many times more than any chemical reaction could produce.请教老师，1. more than 后面是否漏掉了that,因为that 指代的是前面的the total energy。 2. 请老师分析一下句型结构和成分？谢谢老师。
Federal prosecutors are investigating whether U.S. President Donald Trump's inaugural committee misspent some of the funds it raised, the Wall Street Journal reported on Thursday,citing people it said were familiar with the matter.请教句中citing的用法。
It's seem likely that he wanted his starkly worded equivocation on this issue to be heard by congress, which is the only body empowered to hold Mr. Trump to account, given that the Justice Department will not.老师好，最后的 given that the Justice Department will not省略了什么？
...rts think that _______ recently discovered painting may be _____Picasso.A. the;/ B. a; the C. a; / D. the; a答案是D 老师 我不明白为什么第二个空用a 是指毕加索的画 所以用a 是吗 这是不定冠词哪种用法呢