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问题 critical的用法

UV-H2O2 photo-oxidation technology was only available for the advanced treatment of low-turbidity water with a critical limitation of 6 NTU turbidity. H2O2光氧化技术适用于低浊度水的深度处理，降解效果以浊度6 NTU为分界点。请问老师这里的critical怎么理解？

问题 句中to be后面省略了什么

They will pay whoever they find the artist to be，whoever是to be 的宾语吗，那这个不定式是做artist的定语吗?

问题 此处plays和moves如何理解

Basketball's quick pace and dynamic plays are in contrast to the much slower moves in baseball or even in much of soccer and American football.

问题 nothing but 是副词吗

Nothing but a miracle can save her now. 现在只有出现奇迹才能救活她。I want nothing but the best for my children. 我只想给我的孩子最好的一切。这样句子中的 nothing but 是副词吗？

问题 is to do 怎么理解

这里为什么不用 the dictionary covered 而是用了一个be to do的形式呢？be to do 不是表将来的吗？这也不合适啊，明明是已经涵盖了的句子，是事实啊。

问题 among 介词短语的成分

Whereas the poverty rate among youngsters living with two married parents is 7.5%, among those raised by a single mother it is 35%. 麻烦请问一下老师，这个句子中前面的among短语和后面的among短语分别作什么成分，后者为啥要提前？

问题 as...as结构的省略问题

Imagine trying to do something as simple as reading the notes on a medicine bottle without good reading skills.这里，第二个as如果是连词，这个句子省略了什么呢？

问题 suppose 后接从句时的时态问题

suppose 后接从句时的时态问题Suppose you ______ (take) your complaints to the manager.

问题 名词做状语用法

A yellow banana duct-taped to a wall sold for $6.2 million at a Sotheby's auction on Wednesday. Let that sink in. If you're slightly baffled, congratulations -you're in on the punchline.这句话的congratulations在这里是名词做状语吗？怎么不用副词？

问题 ask to do sth 的语法分析

He asked to see the boss. 他要求见老板。 不定式作什么成分？

问题 than do sb是什么用法

Girls receive less health care and less education in the developing world than do boys. 句子为什么在 than 后面加个 do？

问题 一句英汉翻译中的“规定”二字不好理解

An enemy plane was shot down after it violated the exclusion zone.一架敌机在违反禁区规定被击落。

问题 well good是什么意思以及什么用法

看到这样一句：The composition was well good. 这篇作文很好。句中的 well good 用作得吗？是什么意思？——好上加好？

问题 just 可以用作连词引导从句吗

《薄冰高级英语语法》的第68页有这样一句：The car must break down just we were starting our holidays. 我们刚刚开始休假，汽车偏偏坏了。请问这里的 just 是连词吗？引导时间状语从句？

问题 a dirty word是什么意思

下面的句子是什么意思？尤其是a dirty word是什么意思？The way he acts, you’d think compassion was a dirty word.