问题 不定式to do做后置定语和介词to加V-ing做后置定语怎么区分？

Discovery learning is the most appropriate and effective approach to facilitate deep and lasting understanding. 请问这里为什么要将facilitate改成facilitating呢？不定式to facilitate...不是也可以做名词approach的后置定语吗？

问题 是否需要加to

请问老师，在一些外国网站看到了这样的句子： The security of the organization is expected to be attached great importance. 请问后面需不需要加to？ Why should those principles be attached importance? 这句需要加to吗？为什么？

问题 作目的状语的不定式可以省略 to 吗

比如下两句中加粗的 to 可以省略吗？He went out to do some shopping. To get a good seat, you need to arrive there early. 

问题 I'm sorry to see you中的to see you 是什么成分？

问题 分析成分:He used to have a lot of meetings to attend.

问题 since you were young up to now taking you...的理解

Its nature in us as human beings to support and give back where we came back from, because look at it from this angle, they’ve taken care of you since you were young up to now taking you to school. So literally it's socially acceptable or socially moral to give back to mum and dad,” he expla...

问题 have to的用法疑问

老师好！请教一道have to的问题：新概念一P255有段：Do you have to get up early tomorrow morning? Yes, I'll have to get up at six o'clock. 我想问下问句是用一般现在时代替一般将来时吗?可以改成Will you have to get up early tomorrow morning? 吗？

问题 not后省略了to吗

Rich people are more likely to break rules, not follow the law, and not care about other people.这个句子里后面两个not是省略了to吗，not to follow the law and not to care about other peop。还是副词not用在动词前表示否定，那为啥没有助动词呢？

问题 is believed to have been 分析

The Bent Pyramid outside Cairo ______ ancient Egypt’s first attempt to build a smooth-sided pyramid.A. has been believed to have beenB. was believed to beC. is believed to have beenD. is believed to be请问这题的答案为什么选C，可以给我讲解一下这题的语法点吗...

问题 but to do与but do 的疑问

can't help but docan't choose but dohave no choice but to dodo nothing but docan't but do请问这些结构中,为什么单单have no choice but to do需要用到to,而且结构就不需要to呢? 如果再碰到其他结构,怎么判断要不要加to,这有什么规律可循吗? 

问题 "主语+系动词+形容词"这种结构后面的to是什么成分

比如：It would be impertinent to ask where exactly you were.His staff is insolent to our manager.He was elated to pass the exam.是不是to 后面跟名词的话to 就是介词，如果后面跟动词就是不定式?

问题 would have liked to与should have liked to的区别

Much as________, I couldn't accompany him to the concert because I simply didn't have any spare time.A. I should have liked toB. I would have liked toC. I should have to likeD. I would like to have关于这道题，我有几个疑问：1、我从网上查到，would have liked 是would like的虚拟...

问题 如何分析：Do you think it necessary to learn to wait in line?

请问老师，这句话是不是一个宾语从句？to wait in line 是不是一个形式宾语？如何分析这句话的语法结构。为什么是 it 而不是it’s？我们以前学过一个巨型：it's +adj for sb to do sth。对某人来说做某事是怎么样的。这里就是it’s

问题 have got to 是否有一般疑问及否定形式

请问老师"have got to"是否有一般疑问及否定形式？例如 I have got to see a doctor.是否有一般疑问句形式  Have I got to see a doctor?或否定形式 I haven't got to see a doctor.还是have got to 只用于口语的陈述句中？

问题 使用 adapt...to...结构的难句翻译

Adapting that distinctive and powerful adjective to such unexceptional uses is like resorting to a pistol to dispatch a mosquito.请专家老师翻译一下这个句子，尤其是使用 adapt...to...结构的翻译如何处理？谢谢！