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问题 signaled shutdown是什么意思

新编英语第三版课文里的一句：The part of my brain that switches off when I do anything strenuous signaled shutdown and my feet moved metronomically.这里的signaled shutdown是什么意思，充当什么成分？

问题 句子分析（where necessary）

However, if a business is heavily sales driven, it can make more sense to have a monthly operating plan, supplemented where necessary with weekly targets and reviews.where necessary在非限制性定语从句中supplemented的什么成份？

问题 formal在文中的意思

Ritual is defined by sociologists as "that part of family life that the family likes abiout itself, is proud of, and wants formally to continue."请问第一个"that"和"formally"是什么意思？

问题 He is better 理解

在《夸克语法》中，7.77 Comparison of good, well and ill 写道：He is better is ambiguous between(a) He is well again.(b) He is less ill.我只能理解(b)，(a)该如何理解呢？

问题 as在这里用法词性？

He looked round him with a furtive and stealthy air, as one who dreads pursuit. Then he vanished over the hill.怎么理解和分析as one who dreads pursuit？as在这里用法词性？ 这句话和前句的关系如何分析？

问题 名词性从句which翻译疑问

Two of the three bjecting Justices—Samuel Alito and Clarence Thomas—agreed with this Constitutional logic but diasagreed about which Arizona rules conflicted with the federal statute.名词性从句中的which如何翻译？

问题 关于up的疑问

...，请看：For more than 10 years, suicide rates among students aged 10 and up in the U.S. have been on the rise. 10多年来，美国10岁及以上学生的自杀率一直在上升。请问这里的up是什么词性？省略了什么成份？谢谢老师！

问题 这里的for是什么用法和含义

We're going to break with tradition this year and stay home for the holidays. 不懂这里的for是什么用法和含义？

问题 its指代谁

The exhibition, which opened this month at the National Museum of African American History & Culture, begins in a war-ravaged plantation house and ends with Georgetown University’s recent announcement of a bursary for the descendants of 272 slaves sold to cover its debts.谢谢老师！

问题 长难句分析与翻译

Last August, city officials interviewed about 500 residents to find out people’s attitudes to protecting the environment and what actions they had taken.句子摘自北师大高中英语必修第三册第8单元(p40)。请帮忙分析和翻译这个句子，谢谢。

问题 现在分词作主补的问题

It was January of 1940 and I was fresh out of graduate school starting my first semester at the University of Kansas City. 请问老师现在分词短语starting my first semester 是主语补足语吗？

问题 take oneself doing sth 疑惑

Gary and William took themselves shopping. 请问老师：上面例句正确吗？我知道有take sb doing sth的搭配，但是这里用了反身代词 themselves也可以吗？

问题 be noted as having

Those who listened to the critical audio clips were noted as having a higher heart rate and sweat response afterwards.句中as having什么成分，这里as取什么意思？

问题 句子省略

The platypus has an Australian twang the red panda is subtly Himalayan, and the mallard sounds like a Brit. Through live conversations with the exhibits, Ashby hopes visitors will learn more than can fit on the labels that accompany the specimens.这句话的more than can 是不是缺少句子成分...

问题 mirror用法

...hians mirrors that of cetaceans, reducing during their semi-aquatic phases and then diminishing further as they became fully aquatic," Mark Young, the paper's lead author said in a statement on Wednesday.这句话的mirror是不是和什么一样的意思？这个that是不是指代resgression?