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问题 control和control for

... break.They were able to control for student behavior before spring break, which was a strong predictor of behavior during break. 请问这里为何用control for呢，control不是及物动词吗？

问题 请问这里为啥用for,可以用in吗

The PL of a freshly prepared colloidal solution (which shows slight increase duringthe first 24 h) remains unchanged for 2 months in dark conditions

问题 考研英语小作文范文

...：What’s more, you had better have more communication with foreigners, which guarantees that you have a deep understanding of foreign culture.这句话中的have more communication with foreigners是否表述地道呢？如不，怎样表述“与外国人多交流”更为地道？多谢老师...

问题 谓语动词单复数问题

All the struggle，sacrifice，and creation through which the Party has united and let the people over the past hundred years has been tied together by one ultimate theme…主语是all the struggle，sacrifice，and creation是单数还是复数，谓语动词为什么用has，是因为有all还是...

问题 句子结构的理解

...od, the age of electricity is merely the second stage in the age of steam, which began a century earlier.老师，您好！1.上述句子中，怎样理解yet properly understood的结构？是否yet properly understood是一个带转折含义的省略条件句，即yet properly understood = yet if ...

问题 but also 是什么含义

...rganized, conceptual framework, making it and the component ideas, some of which are erroneous, more robust but also accessible to modification.

问题 为什么柯林斯把这个例子叫做现在分词而不是动名词

PREP You use of to combine two nouns, or a noun and a present participle, when the second noun or present participle defines or gives more information about the first noun. 用以连接2个名词或1个名词和1个现在分词，其中第2个名词或现在分词限定第1个名词...

问题 动词的省略和替换

...可以为省略替代，并给出例句：John is smoking more now than he used to (do). 这里有do的话就是用替代词do代替smoke，如果没有do的话就是省略的结构。徐广联先生的《大学英语语法》也有类似的例句P916：Mark hoped that they would all do their duty t...

问题 that引导从句分析

...you’ll be needing some drops to treat this very contagious infection, of which there are some three million cases a year, according to the Mayo Clinic.例句中的the those正确吗？that引导的是什么从句？谢谢老师的解答。

问题 求教一句话的意思

If ever the earth has noticed a system of administration conducted with a single and keen eye to the general interest and happiness of those committed to,it must be the system protected by truth,to which our lives have been devoted to.求教前半句的意思，分析一下句子结构。

问题 长难句的修饰分析与理解

One of them is the k-q model, called the “Uzan-Witczak model”, which describes the resilient modulus, characteristic for varying confining pressure.后面的characteristic for varying confining pressure是什么成分啊，修饰的谁，这句话整体又该怎么解释呢?

问题 这句话是不是少了标点？

how to keep their mind on what they are doing by making it do the work without which no profit can be earned . 老师好。这是一句话，还是两句话呢？

问题 all the power 还是all the strength ?

...子，森林之神Tane做到了。 At last ，the God of the Forest used all the      he had . He pushed Rangi to the right and Papa to the left . At last the darkness went away .A  power  B effort  C strength  D energy答案选A ，但我认为选C...

问题 不定式用法疑问

A passerger will step up and tell me which flight they intend to be taking that day--whether they have a ticket or not. If they've got a ticket i can issue the ticket right there at the ticket counter.请问这里的intend to be doing 属于什么用法？ 和intend to do 有什么不同吗？

问题 请问for在这个句子里做什么成分

For as long as the virus rages, similar drops are likely in America and Europe, which could trigger a further downward lurch in Asia.