找到约 40000 条结果

问题 must be与must have been的区别

She must have been fifty or so when I first met her at a conference.请问这句话中谓语为什么是 must have been,而不能是 must be?

问题 一个涉及see用法的时态问题

I haven't met him for ages, but his mother ________ him sometimes.A. had still seen     B. still sees     C. has still seen     D. still saw老师，这道题我选的是C可答案是B。请问这是问什么？

问题 语法填空（涉及连用 if, when, after 的选用）

But the paradox is that our children can only truly succeed ______ they first how to fail. 答案应该填 when / if 但是 after 可以吗，有什么区别？when / if 在这里什么意思？

问题 ​可否详述静态动词与动态动词完成体的区别

静态动词与动态动词不定式完成体与谓语时间关系。何时静态动词不定式完成体和动态动词不定式完成体可以加for 一段时间。很抱歉曹老师您讲解：主语 seem to have done。我看了几遍还是懂得很浅显。

问题 失败的婚姻用fail怎么表示（failed marriage还是failing marriage）

是 failed marriage 还是 failing marriage 呢？

问题 before作副词在句子中的位置

原句：when I had seen them before online, I had no concept of these details.（当我以前在网上看到他们，我不知道这些细节。）该句是否可改成：when I had seen them online before, I had no concept of these details.将before 放到online后面？

问题 start与介词搭配的问题

What time do you start school?Which lesson shall I start with?(1)为什么start接school不需要加介词,而lesson就需要加介词?He started on cleaning the room.He started in business.we'll start in on discussing chemical equilibrium(2) 而加介词时,一会用on、一会用in、一会又...

问题 other和another的用法

在百度上看到一段关于other和another的话，学生有疑惑。（学生基础不是很好，希望老师们讲详细.上面写着：“只要作者或说话人在上文中未明确提出要注意两件事，就不能用 the other代替another，如 to know is one thing， to teach is nothe...

问题 Be upset by/at/about/with 搭配的区别？

请问be upset 此时是被动吗？ 后面搭配 by /at / about /with 翻译过来都是因...而沮丧，那它们有什么不同之处？

问题 being+的一些用法

1、Some of these causes are completely reasonable results of social needs. Others are reasonable consequences of particular advances in science being to some extent self-accelerating问题：不是很懂什么时候要用，什么时候可以用being+名词2、for workers it can mean an end...

问题 这里的drop用法算不算轭式修辞

To help battle the pandemic, the administration of President Joe Biden said it supported waiving some intellectual-property protections for vaccines. Jaws dropped—along with the share prices of vaccinemakers. 共用drop，下巴掉了，股价下跌。谢谢各位老师！

问题 过去时态的特殊用法

曹老师端午安康！向曹老师请教如下题目："I wondered if I could have a word with you." The past tense used in the sentence refers to a _______.A. past event for exact time referenceB. present event for tentativnessC. present event for unsertaintyD. present event for politeness此题...

问题 如何理解句中than的用法

When we feel sad, it's necessary for us to accept sad feelings as part of life. We should learn how to deal with them better than trying to make them disappear.黑体句子中than是rather than省略掉rather吗？翻译是否正确：我们应当学会如何更好地掌控坏心情而不是想方...

问题 but rather和or rather 的用法

They are not a well-trained group of exercisers, _____ rather a class of participants who are mostly homeless.答案为什么填but,有but rather这个用法吗？可不可以填or构成or rather呢？谢谢老师指导！

问题 关于be going to be wear的疑问

老师，请问这句话有什么区别：1. I am going to wear xxx2. I am going to be wearing xxx一个是to wear，一个是 to be wearing。谢谢老师！