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问题 have to be pp与be to be pp的区别

The problem is still to be studied in depth.The problem has still to be studied in depth. 上面两句哪句对？都对吗？若是这样，那have to be pp与be to be pp的区别是什么？

问题 不定式做定语的被动与主动问题（出现动作执行者）

...acher introduces them to the material to be covered, but dose not to teach it.句中已出现了cover the material 的动作执行者：the teacher，请问the teacher introduces them to the material to cover 是否正确？

问题 be worthy of being read中的being可以去掉吗

老师请看以下句子：This book is worthy of being read.【我的疑问】read 可以当作名词来使用，介词of后面直接加名词 read 就可以了，为什么还要加being？去掉 being 可以吗？谢谢老师！

问题 这里为什么要用过去完成时

The landlord smiled and immediately went out. In a few minutes he returned with my bag and gave it back to me. 'I'm very sorry,' he said. 'My dog had taken in into the garden. He often does this!' 请问老师，这里的My dog had taken in into the garden. He often does th...

问题 一个经济学人句子的英语语法分析求助

...of oil halved in the past six months, but natural gas is the cheapest it has been in a decade, bar a few panicked months after Lehman Brothers collapsed, when the world economy appeared to be imploding.我不明白之处在于：“but natural gas is the cheapest ”和“it has been in a decad...

问题 句子语法改错

The bats probably also use magnetic fields and smell when they need, but it appears that for their regular nighttime excursions they depend most heavily on their memorized map.这句话中请问哪里有语法错误呢？谢谢回答

问题 动词现在分词形式问题

You just go along the road winding (wind) by the lake, and you won't miss it.这里为什么用动词的现在分词形式呢？这里是什么语法呢?

问题 为什么用复数seas？

Steadily above them the beacon threw its lifesaving beams across the dark and angry seas.

问题 as的用法

It was a day as Australian as you can get: Sun, waves and surfing at the beach.这句话的语法结构不是很清楚，特别是这个as Australian as you can get怎么翻译？

问题 形容词可以作主语吗（fresh is best）

...s to food. However, most produce at the store went through weeks of travel and covered hundreds of miles before reaching the table. While farmer’s markets are a solid choice to reduce the journey, Babylon Micro-Farm (BMF) shortens it even more.这是2024年新高考全国卷2阅读理解C的一句...

问题 句子成分分析（涉及不定式作主语）

It makes me proud to be a Chinese just to see how our businesses are improving their productivity.这句话的正真主语是to see how our businesses are improving their productivity吗？如何分析？

问题 ever用在过去进行时是什么含义

If we are ever going to protect the atmosphere, it is crucial that those new plants be environmentally sound.此处的ever该如何理解？ever用在过去进行时是什么含义？

问题 介词在句中的搭配情况

Who is going to supervise,regulate and operate as lender of last resort with the gigantic banks that are being created? 这句话中的with是和哪个词搭配的？

问题 口语中表示同意或允许用Certain还是Go ahead

老师，您好！—May I ask a question after class,sir?—______ but not during my lunch break.答案是 Certain，我想填 Go ahead。我的答案对吗? 谢谢！

问题 为什么不用mustn't来回答

Do I need to leave the city by one's o'clock? No, you (  ).A. can't     B. mustn't     C. don't have to    D. may not 答案选择 C，为什么不选 B，谢谢分析。