When have I told you this ? (我什么时候告诉过你这些？）=I don't think I have ever told you this.书上说这是一个修饰疑问句，等于否定陈述句，when在这里不指时间。我的问题是：1）为什么这里的when不指时间， 如何理解？不指时间的话，...
...报名参加亚洲之行，满足你想去旅游的愿望。(3)
sign up to do sthI
signed up to learn how to scuba dive. 我报名参加学习戴水肺潜水。I've
signed up to take a course at the local college. 我报名在当地的学院里上一门课。All
four of their sons signed up to join ...
...句中should，主句中含有谓语动词would/should/could/should + to do/to have done/to be doing.主句是虚拟语气，可以知道是if从句虚拟条件句。我的疑问1：真实条件句中，if从句中的should怎么理解，这里should是理解为情态意义比如意愿？还是表...
...ary American Usage 一书中也认为：前面有数字时，score相当于形容词，后面不用of，除非后接特指的群体中的一部分。（原文摘录如下：When preceded by a numeral, score
is treated as a cardinal number. That is, it is treated as an adjective and
used without of, ...
If you are a loner, you'd better get yourself
some friends, or else risk losing precious brain cells. 麻烦老师，请老师帮我分析下句子成分，尤其是or else后面接的动词原型risk doing sth.在句子中做什么成分。谢谢！
...om/topic/La-traviataGastone tells her that during her recent illness, Alfredo had inquired after her daily. Violetta, amused, cannot understand why and teases her lover, Baron Douphol, that he did not do the same. 也就是说Gastone现在病已经好了https://www.britannica.com/topic/The-Red-and-...
...您：When she found the room needed ____ , she couldn’t help but _____ down
the unfinished newspaper and began to do the work.A. to be tidied; lie B.
tidying; lay C. being tidied; to
lay D. tidied; to lie我个人觉得ABCD的答案都不正确，答案是“to tidy; lay...
... are too too careless.He is so so glad to see me.They are so so foolish to do so.I rather rather like this book.It is rather rather expensive.请专家老师帮我指正，感谢不尽！
...sing 不应该是 to use 吗？感觉应该是It will be a guide for sb to do sth 这样的用法吧！况且这个 to use the Internet 还与后面的 keep students away from bad sites 是并列结构吧。后面的keep students away from bad sites 可视为是承前省略了不定式符号 to 的...
...e (to) play him at chess? NO!Me (to) appease a chap like him?Nothing doing.这三个都是非正式语体中，当人称代词用于不带谓语或者不带限定谓语动词的不完全句中作主语时，习惯用宾格，而不是主格。第一个疑问：这个例句虽然不是正是语...