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问题 be required for与be required by的区别

The existence of the giant clouds was virtually required for the Big Bang,first put forward in the 1920s,to maintain its reign as the dominant explanation of the cosmos.实际上，巨大的宇宙云的存在，是20世纪20年代首创的“大爆炸论”得以保持其宇宙起源论的主...

问题 the whole day 表示一段时间时可连用for吗？

电视机开了已有一整天了。 TheTV set has been on ______. (the whole day, for the whole day) 请问：表示“一整天”的 the whole day 前要不要加介词for？请专家指教，谢谢！

问题 for which定从

You will see several cases for which the attitudes or biases of the authors of certain studies shoud suggest a critical framework for evaluating their position. 其中for which怎么解释

问题 for delivery是什么意思

By packaging large pieces of the high-speed rail line together, for delivery by a single contractor, the project’s cost and constructiontimeline would be greatly reduced, the team proposed.疑问 for delivery 在这句中什么意思？由于传给一个承包商？

问题 for himself的理解

He wanted all the running of the business for himself.这句话答案解析说for 引导的短语表示对象，for himself在这里是亲自的意思吗？怎么理解答案说的"表示对象"？

问题 of和for用法辨析？

Once you click onto a campaign ad., the mining for personal information begins.一旦你点击了竞选广告，他们就会开始挖掘你的个人信息。通常，都是the V-ing of ....这样一种结构。即上句应该是the mining of personal information...?为什么用for呢？

问题 介词for含义？

We are in the midst of one of the worst recessions for many, many years. 我们正处于许多年以来最严重的一次经济衰退。以上是词典例句。为什么用了for many, many years ? 这里用介词for，是什么用法和含义？

问题 状语从句 for if

So, inventors deserve a reward forthe amount of time they spend developing their ideas.They also need the security of knowing that if they share the invention with the rest of the world, nobody will steal it....这两句话中，for 和 If 是引导的状语从句吗？

问题 I can’t for all the life remember.表达对吗

I can’t for all the life remember. 这句话有错吗？

问题 in+时间段和for+时间段有时候可以互换吗

The fruit ripened for four week.The fruit ripened in four weeks.He cleaned the house for two hours. He cleaned the house in two hours. 剑桥英语认为这两组句子表达的意思是一样的，只是for表示“BOUNDING”.in表示“UNDING”

问题 时间段状语用in还是for引导

...esitate to applaud loudly as the famous composer walked out onto the stage for the first time in 12 years.这是2020版高中英语北师大版必修第三册第7单元(p15)的句子。请问这里为什么用in引导时间段状语，不是应该用for来引出时间段状语吗？

问题 look for 的for 可以前置吗

在本网看到一个网友采纳的解答认为：I know the boy for whom you are looking. 是正确的。https://www.cpsenglish.com/question/2337我在实际学习中，似乎不记得见过look for 分开的用法，后查剑桥字典，该字典解释：look for 为prepositional verb, look 和f...

问题 托福阅读-关于介词for后面加一个完整的句子问题

Under the force of gravity, the compression resulting from a collapse of the object must release energy. Ages for Earth were derived that were in the tens of millions of years, much less than the geologic estimates of the lime.在重力作用下，这种来源...

文章 高中英语新课标词汇-教学参考资料-suitable

...们希望能找到一所合适的学校。This is a suitable moment to ask for the afternoon off. 这是请下午假的最好时机。(2) 用作表语It’s not very suitable to wear in very hot weather. 它不很适合在太热的天气穿。Only a few of the people who applied were suitable. 只...

问题 请问在这里for表示时间的意义

The first officer that they had seen for weeks？for weeks好像提供了一个背景时间？在这个背景时间，一个事件发生，seen the officer。在这里for能表示一个背景时间吗？这是for的什么用法，for不是表示一个动作和状态的持续时间吗？持续的时...