问题 难句翻译和时态分析

A taped message from his mother plays in the background. At first Jimy had played the records everyone played in those days.请老师翻译一下这个句子。另外，请分析一下：为什么先做的动作用一般过去时(played)，而后发生的动作却用过去完成时(had played)?

问题 请问at mercy of和at the mercy of有区别吗？

话题 at 和 by

话题 by 和 at

问题 定从和同位语从句区分

Skills have to be paid for in the same way that goods are paid for at a shop. 请问这句话是定语从句还是同位语从句，网络上说这里that可以改成in which，这要怎么理解？

问题 动名词和不定式含义辨析

...。2)  Frank smiled when he remembered his hard early years. 我的分析和疑惑：when=after动作remembered先发生，然后再smiled，我感觉根据课文语境，是否用进行时更好？即Frank smiled when he WAS REMEMBERING his hard early years 呢？在回忆的过程中（过去进...

问题 Play和Play at的区别

请问老师，同样是玩游戏，加与不加at, 究竟有什么区别呢？ Play+具体游戏 ，play at + 具体游戏

问题 unless用法

...说法，为什么在课文里出现了Where must the puma have come from? 和 ... but where had it come from? 这2句为什么不用一般现在时呢？ 2）experts confirmed that a puma will not attack a human being unless it is cornered. 书上说这里的will不是将来时，是表示倾向的...

问题 is to stay at 和 to stay at 的用法区别

1⃣️The Clarks haven't decided yet which hotel to stay at. 2⃣️The Clarks haven't decided yet which hotel is to stay at. 我的理解是： 1⃣️ which hotel to stay at是非谓语 2⃣️which hotel is to stay at是从句 两种写法都可以,是吗？

文章 老问题：in the playground or on the playground

...之一，可惜去世得早。在其著作中只提到用 in the playground和 at the playground 都是正确的，前者侧重空间，后者侧重地点。At 侧重表示某个点这在Close的著作中已有阐述。赵教授就没提 on the playground 是怎么回事，遗憾！2. 葛老的惯...

问题 怎样理解：in the hundreds of millions

...s是users的后置定语吗？In the hundreds of millions在这里的用法和含义怎样理解，谢谢老师。

问题 关于定语从句和插入语的区分？

Jessica had been slowly paying off over $113,000 of public and private student loans since graduating in 2009, at the same slow pace she saw reflected in her peers. 请问这句话中she saw 是属于定语从句还是插入语？是不是没有关系词就是算插入语？另外relected ...

问题 these days和at present的区别

these days 和 at present 都表示“现在”，它们有区别吗？

问题 I was convinced he had been drinking 和 he had drunk 究竟有什么差别呢?

...has left me."上面节选中， I was convinced he had been drinking 这里和he had drunk 究竟有什么差别呢？我体会不出差别。另外，作者在描述当时的状态时， 为什么不是过去进行时His hands were trembling 呢？ 用 His hands trembled. 过去时说明过去某...

问题 away用法

The puma was often observed at one place in the morning and at another place twenty miles away in the evening.中away是什么词性?什么用法?She saw a large cat only 5 yards away from her.这里away词性和用法是什么？请老师们分析一下，谢谢！