1. We managed to arrive at the hall before the concert had started.2. He came in before I had done half the work. 请教老师，我们都知道发生在 “过去的过去” 的动作用过去完成时态，可是句中介词before前的动作先发生用过去时态；before后...
What it wasto become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.1,what 引导的是主语从句，做become的宾语对吗?2. when引导定从 修饰between 4.5 and 3.8 billion years ago对吗?谢谢
...lord for a room. “There’s nothing left,” he said, “_________ to sleep in Number 7”.A. if you didn’t likeB. If you don’t likeC. unless you are likingD. unless you’d like答案:D我想知道：答案D: unless you'd like 表示“例外的特殊情况”，在这里，究竟...
I'd like to purchase a large quantity of T8 LED glass tubes 120cm in length.老师,120cm in length.是如何理解的;数词修饰介词短语吗,还是介词短语修饰数词,那个修饰那个一般如何判断的,它们一起作T8 LED glass tubes的后置定语?
Children everywhere still need to be immunized, and children whose immune systems are weak,sometimes get a type of polio that's shed from the vaccine into sewage.不懂that's shed from the vaccine into sewage.这句话的语法结构和成分，请教老师分析。谢谢！
... been wrapped up in newspaper and
it contained half the money he had lost, together with a note which said: ‘A
thief, yes, but only 50 per cent a thief!’ Two months later,
some more money was sent to Sam with another note: ‘Only 25 per cent a thief
now!’ 请问老师：如改为 only a 50 p...
（1）-What gift do you plan to give your mother for her birthday? -Oh
I have forgotten all about it.（2）-Can you pour me some tea please Jenny ? -Are you sure? I
thought you preferred coffee.回答时到底使用，现在完成时还是一般现在时，有何区别？
...老鹰队淘汰后，前者先发中锋恩比德发了一段推特“Sorry to disappoint you again but just know that I gave everything I had knowing the circumstance.If there’s one thing I’ve learned being here,it’s the toughness.”请问划线部分做什么成分，如何翻译？
“Dare to be different, please don't smoke!”pleads one
billboard campaign aimed at reducing smoking among teenagers-teenagers, who
desire nothing more than fitting in.这句话中的前半部分，书上说是pleads作谓语的倒装结构，但是书上有说plead是不及物动词，也就是...
I didn’t even touch it when I was in college, that’s how indifferent I
wasto it.教科书上一篇课文的一句话，it指的是纸牌游戏，意思是我在大学期间甚至碰都不碰纸牌游戏，我对它就是如此冷漠。为什么可以直接用逗号连接两个句子呢这不是...
She decided to try out for a volunteer after-school reading program.请问：这句话中的volunteer到底怎么理解？是志愿的（形容词修饰program），还是志愿者？是译为参加一个志愿的课后阅读项目的选拔，还是参加志愿者选拔（在课后阅读项目中）...
您好，请问：Don't worry, you have nothing to fear from us.1. 这是牛津字典的例句，请问这是什么特殊句式？Don't worry是祈使句，后面和一个简单句中间用逗号连接，为什么可以这样？2. 如果don't worry后面用about补充了着急的内容，发现字...
It was his unenviable task to tell Karnazes that his sister，Pary, has been killed in a car accident. 这里为什么说has been killed, 不能是was killed, 还有有哪位大神能跟我分别讲下过去时，和现在完成时，以及过去完成时的区别吗，还有一个问题， At his t...