Such a shift would transfer rural China，where almost half a billion pigs are produced each year, about 40% of them on small farm with fewer than 30 sows.这里about 后面是独立主格结构吗？
...st amount of extra money necessary to send their children to schools with a perceived educational edge. 请问老师necessary在此该怎么翻译呢？可以省去不翻译吗? 富有的父母总是愿意花大量的额外的钱把他们的孩子送到被认为有教育优势的学校。
我想请教一个问题，这个句子里面的as引导是什么从句?能否帮忙分析一下这个句子? Stuides have found obesity is associated with impairments in cognitive functioning,as assigned by a range of learning and memory tests.
By ‘indices’ he refers to work through connection with, or cause and effect of, the thing to which reference is made.请教老师这句话的语法结构。另外还有几个具体问题不明白：1，by ‘indices’还原到句中应该在什么位置；2，the thing to which reference is mad...
The next Olympic Games are in two years, ________ I will be a university student.答案是 by which time。我想问：可以用 in which 吗？which 作关系代词指代先行词 two years. I will be a university student in which(two years).
...话：1. Members go on the site and register the books they own and would like to share.2. Members leave books on park benches and buses, in train stations and coffee shops. Whoever finds their book will go to the site and record where they found it.为什么一句用 go to the site，一句用 go o...
1.为什么be done中的be是助动词？而have been done却是系动词？
2.我们知道主系表结构可以倒装。但是表示被动饿也叫主系表结构吗？比如:the picture is fixed on the wall可以说成fixed on the wall is the picture.但是前面那个is是助动词，不是主...
...只修饰句子的一部分吗？In China, everyone has the opportunity to be vaccinated , but that's
not the case in America.句中In China从逻辑上讲是修饰第二个逗号前面的everyone has the
opportunity to be vaccinated, 但是从语法上讲这种提到前面的属于批注性状语...
She stood there motionless, her eyes filled with tears—whether of shame, frustration, or grief it was difficult to tell. 请问老师句中的of是什么成分，什么意思？此句中的 of 是否是省略后的结构？