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问题 on the back与on one's back（定冠词与物主代词的区别）

She came along with her baby on the / her back.请问专家：这句中该用定冠词还是物主代词，还是两个都可以。

问题 句子单词全认识但理解不通，求解释

...ot; The activist, Joshua Wong, a leader of the 2014 protests who has since formed a political party, was pictured in a short video carried on the Weibo account of the Supreme People’s Procuratorate, the top prosecutor’s office.名为黄之锋(Joshua Wong)的这名活动人士是2014年...

问题 the addition of proper fractions是真分数的加法的意思吗

Today's arithmetic lesson is on the addition of proper fractions. Please insert yesterday's homework in the proper slot."on是比较正的学术类的关于，the addition of proper fractions是真分数的加法的意思吗？proper还有这个用法呢吗？

问题 句子结构分析（涉及because of的修饰问题等）

Functionality of proteins often changes dramatically with denaturation because of changes in solubility, altered chemical reactivity because of exposures of reactive sites on the p...

问题 关于based on

请问老师下面这句话正确吗？Based on his own experience, he wrote a novel. 是不是应该写成： Basing on his own experience, he wrote a novel.  或者Based on his own experience, his novel was successful.

问题 besides doing还是besides to do

Besides doing all my schoolwork, I chat with my friends, watch films and read the daily news and other interesting articles.这是北师大高中英语必修一第1单元中的一个句子(p8)。besides是介词，按理说后面接动词时用动名词是可以的。但我在词典上没有查到...

问题 句子结构问题

Just as on smoking, voices now come from many quarters insisting that the science about global warming is incomplete, that it's OK to keep puring fumes into the air until we know for sure. This is dangerous game: by the time 100 percent of the evidence is in, it may be too late. With the risks a...

问题 upon和on

on和upon何时可互换?何时只能用on?何时只能用upon?

问题 it和one替代使用辨析

...ived a few minutes from my home. 少了一个who lived a few minutes' (walk/ride) from my home. ?3) more modern heavy duty pieces: 这个more是否有2种理解，修饰modern比较级，或限定词修饰pieces ?4) 最后一个疑问：在这一句中，I will build traditional reproduction coo...

问题 on在句中是什么词性

He insisted on me staying.here 中的insisted又可以做及物也可以不及物加on 就代表不及物那么on在句中做什么成分状语？

问题 I know not sth 和 I don't know sth 一样的含义吗

And then I fancy that the daily intimacy with the sick man moved her strangely. She raised his head to give him food, and it was heavy against her hand; when she had fed him she wiped his sensual mouth and his red beard. She washed his limbs; they were covered with thick hair; and when she dried his...

问题 不定式做定语什么时候用主动形式和被动形式

I was watching the clock all through the meeting，as I had a train ______．A. catchingB. caughtC. to catchD. to be caught答案为c， d 为什么不行，不定式做定语什么时候用主动形式和被动形式，...

问题 I like all of DVDs, so whatever DVD的语法问题

请老师帮忙看下答句是否存在语法问题？请指正，感谢。Q: Which DVD do you want to watch?A: I like all of DVDs, so whatever DVD.

问题 set foot on/upon与set feet on/upon

When the explorers first set foot upon the continent of North America, the skies and lands were alive with an astonishing variety of wildlife.上面一句是2021年新高考全国乙卷（全国卷I）的阅读理解C中的句子。老师说 set foot on/upon 意思是“踏上”，请问这里为...

文章 汉译英 “一...... 就 ......” 的多种表达方法

...中，用directly 作连词，引导时间状语从句。如：Directly I walked in the door, I smelt smoke. 我一进门，就闻到了烟味。（《牛津英语用法指南》第四版495节） 4. 在英国英语和美国英语中，the moment (that) , the instant (that) , the second (that) , th...