be worth doing sth. 中主语是doing的宾语，但在做题的时候发现一道题的答案于此有出入：机会就在眼前，但值得冒此风险吗？The chance is right in front of us , but_____________? 答案是 is it worth taking a risk 在这里，take a risk 已经有宾语，...
老师好，there be A and B就近原则，只考虑A的单复数，例如：There is a knife and fork on the desk.There are a light bulb and a screwdriver on the desk.这两句都是在书上找的，请老师讲下为什么第二个不用is呢？盼复！
... of GAAP the author is making the point that information protection should be given due attention.【参考译文】作者提出GAAP概念是想说明信息保护问题应该受到适当的关注。【我的疑问】这个句子的结构我不会分析，请帮我分析一下。【我的困惑】我...
Still, there is a lot of work to be done in the area of transplanting the printed cells. 老师，这里的to be done, 为什么不可以是to do的形式，我的理解是work后面省略了for us ？请老师帮忙看看问题在哪里？
在《新英语语法教程》（何桂金，高纪兰，第一版）中看到有下面的说法：助动词have和助动词be不能连用。但I have been doing it for a long time. She has been a teacher for 30
years. It has been stolen by a boy. 应该都是have和be连用吧？谢谢！
...oticed to do sth.。链接: https://www.cpsenglish.com/question/38661我把be noticed to do结构抛给了母语人士(wr)，他们认为这是错误的结构。链接:https://forum.wordreference.com/threads/be-observed-watched-felt-to-do.3904738/#post-19979419在语料库中似乎也没有查到be ...