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 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 关于英语考研真题

请问：Again, differences between people and the opportunity for natural selection to take advantage of it have diminished.我查看很多参考书，这里it指differences 但是differences不是复数吗？

问题 preceding的词性

How does it differ from the preceding one that we were listening to?这句话中，preceding为one的定语，就词性而言，preceding为形容词，还是为precede的现在分词？

问题 as从句分析

During the economic slump, inability to obtain credit severely cut auto buying as lenders rejected even those with good credit ratings.这个句子怎么分析啊，as引导的什么从句？

问题 whatever引导什么从句

Whatever the majority decided I was prepared to go along with.只要是多数人的决定我都愿意服从。请问老师，这里的whatever引导什么从句？

问题 finished用法

Mary spent the morning painting a picture. When she was finished, she showed it to her parents.请问老师：finished在这里是看作一个形容词吗？还是过去分词形式呢？这算是被动结构吗？但是被动意思好像也不对？

问题 tell B to A/announce B to A结构分析

请问老师，像tell B to A/announce B to A这种结构，to A应分析为介词短语做谓语动词的对象状语，当B结构比较长的时候，需要将对象状语移到B之前形成tell to A B、announce to A B的结构，老师我总结的对吗？另外to A是不是对于tell是必具...

问题 nice to see you,good to see you,glad to see you区别

问题 go(get) back to,go(get) back和back to区别

请教老师下面三个疑问:1.go back to,go back和back to区别这三者间用法有什么区别？2.当追溯到意时go back to,go back和date back to有何区别？3.get back 和get back to又有何区别？和go back to，go back的区别又是什么？

问题 by virtue of 和 on account of 都表示“因为”，这两者有什么区别吗？

The old musician decided to move to her country home _____ her advanced age and poor health.为什么这道题要用on account of 不用 by virtue of 呢？

问题 形容词作宾补时为什么有时前面用be有时不用be

...用be)Sports can make us strong and healthy.(strong and healthy前没用be)The family rules help us know how to be safe.(safe前用了be)

问题 remain后接live,alive,lively,lived的区别

To our surprise, the dog remained ______ after so many hours after the earthquake. A. live   B. alive   C. lively    D. lived 请问选 B 还是 C 呢？remaine 后接的形容词是表语吧？lively 和alive 都可用作表语啊！

问题 句首的In是不是应该去掉？

In Dr. Ren and Dr. Li’s studies of preschoolers found that increasing the level of participation in extracurricular activities could benefit children's cognitive and language development to some extent, but over-scheduling children could decrease the benefits of extracurricular participation or ev...