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问题 seem to do，seem to have done，seem to be doing的疑惑

Gazing up into his eyes, she seemed to take in all he said. 她抬起头注视着他的眼睛，好像听懂了他说的一切。《柯林斯高阶英汉双解学习词典》这句出自科林斯的例句，为什么不是Gazing u...

问题 to为什么要用to be

The family environment is widely believed to be the most important influence on children's development.其中的to be是做非谓语做宾语吗？为什么要用to be，是动词believe的固定搭配形式吗？

问题 how to do it 和what to do

有这样一句：You have to know how to study. 好像固定搭配应该是 how to do it 和What to do 吧！为什么此句省略了study 的宾语？或是因为此时study为不及物吗？

问题 next to结构

A similar pattern is seen in the next to lowest income group,from 3.5 to 3.8 to 4 per 1,000. 请问这里的next to是整体做副词修饰lowest吗？还是next和to之间省略了什么？ from 3.5 to 3.8 to 4 per 1,000是pattern的定语吗？

问题 该用to use还是to be used

Additional combining forms are presented in this chapter to use in making words with suffixes. 此处to use应该是被用于的意思吧？是不是用to be use更合适？

问题 to do还是to doing

to什么时候是不定式的标志什么时候是介词？

问题 move to closing arguments 还是应该是 move to close arguments 呢？

VOA《Defense Argues Trump Not Directly Responsible for Capitol Violence》Senators had several hours Friday to ask questions of both sides and will move to closing arguments Saturday.老师： move to closing arguments - move to doing sth 是什么意思？ 这里用了介词to,而不是不定式to...

问题 was to 中的to 可以省略吗？

这是教美式发音的美国老师说的;This challenge was introduce somebody.是不是was后少了to呢？ 像这种to是必须有，还是可以省略呢？

问题 It is convenient to sb to

I don’t think it is convenient to him to meet her at the station. 我认为他去车站接她不是很方便。 请问这里为什么用 to sb to do sth 呢？英语不是通常要用 for sb to do sth 吗？

问题 to be chosen from 与to choose from的区别

There are five pairs ______, but I’m at a loss which to buy.A. to be chosen     B. to choose fromC. to choose           D. for choosing这里用 to be chosen from 与to choose from 有什么区别, 主动被动有何区别？谢...

问题 英语可以说 say sb to be / say sb to do吗

英语可以说 say sb to be 吗? 比如下面的句子：He said us to be wrong.I said him to be honest.They say her to have a lot of money.He said her to know the answer.He says her to live abroad.

问题 appear to be / seem to be 接名词时to be究竟能省略吗

... / seem 这类词在接名词的时候，究竟能否像接形容词一样 to be 可以去掉呢？(appear + n.)  我在网上搜索的时候，有的网站写接名词/形容词都可以省略to be，有的网站又写分情况（当名词前带有定冠词或物主代词修饰时），我被搞...

问题 to be playing to do it 怎么理解

But we need to be playing to do it.这连着的两个to都是宾语吗? 为什么它用进行时?

问题 to hold和to be held的区别

I will attend the meeting to be held next week.I will attend the meeting to hold next week.I will attend the meeting held next week.to be held / to hold/ held, 哪个表达是对的？如果都对的话，表达意思上有什么区别？

问题 appear to have done 和appear to do 的区别

原句：A desire to sell gold appeared to have been worsened by thinking that concerns about the Greek economy have somewhat eased. 此句中可以用appear to be 吗？Appear to have done 和appear to do 有何区别？谢谢老师精彩解答。