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useful lessons for agriculture and food policymakers worldwide." says the
bank's Juergen Voegele.这句话的句子成分是怎样的？while究竟是干啥的？如果说while引导了一个省略状语从句，那主句又在哪里？
人教版必修一补充阅读里的句子：Strong winds blew upon the unlucky city and those whose homes had once stood in its green hills.请问句子里的upon能替换成on吗？我觉得不能替换，因为on是表示在“与物体接触的表面上”；但是不能替换的话，这里是u...
老师请看以下句子："The traditional rule was it's safer to stay where you are, but that's been fundamentally inverted," says one headhunter.【我的疑问】it's safer to stay where you are 是表语从句对吗？为什么从句前不需要加that作为引导词？谢...
http://ask.yygrammar.com/q-22797.html Based on recent researches, distance learning slowly proves as valuable as the traditional campus-based form.该句中 based on 应该悬垂了吧？ 因为distance learning 不是 based on recent researches。
He is still where he was.这个 where 是用作融合关系副词吧？这个 where 如何分解？是这样吗？He is still where he was.=He is still in the place where he was.若是这样的话，这个 where = 介词短语+ where，是这样吗？
Your pitch should be tailored to the specific person or company that you are pitching to.请问老师，定语从句这里使用了that是因为什么？因为先行词既包含人和物，所以选择that？还是因为先行词是company，所以选择that？这里的or有没有影响？看到先...
The Farrars realized they were one accident or one job loss away from bankruptcy.away from bankruptcy 是修饰one accident or one job loss 吗？句子的意思是：“Farrars 意识到他们是需要一场远离破产的事故和工作的丢失”？明显我的理解不对。不太明白away fro...
China will continue to depend upon lucrative export markets to earn the foreign exchange it needs to develop and grow.参考译文是“中国会继续依靠获利的出口市场来赚取外汇以发展和增长自己的经济。”原文没有表示“经济”的单词，这里是怎么译出来...
下面这个句子对吗？ The man spent all his knowledge on his research for about 10 years but achieved nothing.请问这个句子中的 spent all his knowledge on his research 用得对吗？换句话说，spend 可以接 knowledge 作宾语吗？谢谢！