问题 be going to与be going to be的区别

He says he's going________ a computer programmer in the future.a.to do b.become c.be  d.to be这个答案选择d，老师我想问下：to后面为什么还要加一个be动词。谢谢！这个be 动词在什么情况下要加！

问题 alert sb to sth=sb be alerted to sth吗

They have been alerted to the possibility of further price rises.他们己意识到价格可能继续上涨。牛津字典上写的用法是alert sb to sth 使认识到，使意识到。我想问他为什么要加been。是因为alert sb to sth=sb be alerted to sth吗？希望老师可以解释一...

问题 定语从句（3）

...构成的定语从句与不定式的转换： 1） The farmer used wood to build a house in which he could store grains. 2） The farmer used wood to build a house in which to store grains. 3） The farmer used wood to build a house to store grains in. “介词+关系代词+ to do”结构不...

问题 go to a place（去一个地方）中的to可省略吗

看到这样一个句子：He likes going the park every weekend.请问这个句子对吗？是不是在 going 后面少了个介词 to？这样的to可以省略吗？谢谢！

问题 现在完成时中的have been to疑问

有些琢磨不透have been to是怎么一个原理结构？是不是have done+be to=have been to？be to的意思是 将要做，然后加上完成时的形式后 have been to，表示已经做过？包含着一种 非延续性的含义在其中 对吗？然后如果have been to Beijing就表示去...

问题 分析: I'm sorry to leave, mom, I had to go.

I'm sorry to leave, mom, I had to go（很抱歉我要走了,妈妈,我不得不去）请问这里的to leave是指过去离开吗？请问要怎样理解？

问题 分析不定式是什么成分（涉及sth is easy to do, happen to do等）

1. The question is easy to answer.(to answer 做什么成分）2. I happened to meet him in the street.3. He seems to know the truth.

问题 分析 I have no objection to him coming to stay.

to him coming to stay 是objection的定语吗? 能具体分析一下这句话的结构吗？

问题 mean to 与 be meant to 的区别

The track ______（mean）to inspire people’s hearts “with the soft power of music”.这个句子用 menas 还 is meant？

话题 1 is to 2 what 3 is to 4

话题 关于to do与to have done的疑问

问题 to是介词还是不定式

He attributes his success to hard work.这个句子当中的to hard work中的to是介词还是不定式？to hard work是作什么成分？如何区分to是介词还是不定式？

问题 step to do是定语还是状语

三个待讨论的句子[1] The president took immediate steps to stop the fighting. 来源: 朗文6[2] But there are more steps to be taken. 来源: 林超伦笔译实战[3] We just need to take that first step to changing. 来源: 外媒例句思路:对于[1]，由于take是动态动词，所以...

问题 不定式的否定式（not to do还是to not do）

He told ma to not be sad.老师，not to be sad 等于 to not be sad吗？为什么这样用，二者有什么区别？把 not 放在非谓语里的用法在小说里见过好几次!

问题 be said to do、be said to have done...

be said to do 据说……将作be said to have done 据说……已经做了这里的不定式是作为什么成分呢？