问题 动词前面最多可以有几个助动词(must have been being)

有人说，一个动词前面最多可以有四个助动词，并举例如下：Jim must have been being told while I was outside. 请问这个说法是对的吗？

问题 out of everday的用法

Another key trend will be 3D-printed food, which will produce “intricate sculptures out of everyday foodstuffs that will look good and will also be used to improve the convenience and the nutritional value of meals”. 请问out of everday在这里修饰谁?做什么成分?

问题 in the early morning of May 10 为什么要用介词in不是on

问题 请教一个翻译的问题

Cleisthenes' principal contribution to the creation of democracy at Athens was to complete the long process of weakening family and clan structures, especially among the aristocrats, and to set in their place locality-based corporations called demes, which became the point of entry for all civic...

问题 of介词和后面的词的关系

the activation of other RTKs upstream of PI3K and AKT，想问老师，RTKs upstream of PI3K and AKT到底是PI3K and AKT的上游，还是RTKs的上游。还有类似的the use of pharmacological compounds have uncovered regulation of RTK protein levels，是指调节RTK 蛋白水平（动宾关系...

问题 the happiness we seek we seek for ourselves请问这句话成分

Because the happiness we seek we seek for ourselves , our happiness is bound up with our identity.

问题 of 后只接wh-引导的句子吗

of 后是只接wh-引导的句子吗?The Chinese people won the great victory of justice over evil, light over darkness and progress over reaction.那这个句子里，of后面的是词组还是句子，若是句子又怎么看？望老师解答，谢谢！

问题 Downstream of ... 中的downstream是什么词性

1. It will push SMS messages to people downstream of a flood event giving them up to 24 hours advanced warning.2. Valve must be installed downstream of receiver tank.请问这两句中downstream ...

问题 关于过去完成时的问题

Eventually, the couple found that their bodies turned for the better, with re-found strong muscles that they thought had lost forever. 老师，这边用had lost,用过去完成时表达怎么理解？是相对于身体好转这个动作之前吗？

问题 单独过去分词做前置定语

The study found that, among prosecuted firms, those with the most comprehensive CSR programmes tended to get more lenient penalties请问这里是prosecuted是单独的过去分词做前置定语吗，为什么我查不到prosecuted这个形容词，它没有形容词词性它好像只有动词那...

问题 be being done 与 be getting done 的区别

The two partners disputed over their assets when they were getting disbanded.请问,这里的 进行时被动,用getting和用being有什么区别?  另外,对于"解散" 这个动作,也可以用进行时来表达么?*不知道放在这个分类里对了么,不对的话还请管理...

问题 one of后面可以接单数名词吗

下面这个句子中的one of后面的名词为什么没有用复数呢？The period since the revolution has been one of political turmoil. 

问题 Would rather did / do

On the one hand Mr Sunak wants to placate a range of hawkish constituencies, such as Thatcherite backbench Tory MPs who would rather the government keep taxes low and bond traders who in recent weeks have sold their investments in sovereign debt.Would rather加从句的时候，一般不是要用...

问题 need 还是 must？

辅导班的一道题： —May I go out. Dad？ —No, you ________ let your mother know first. A. can  B. may  C. need  D. must 老师说答案为D, 理由是先要征求妈妈的意见，然后才能出去，我质疑说，即使先告诉妈妈也不一定允许...

问题 可以说not five minutes ago吗？

请问not可以否定带ago的时间状语吗？比如：He was here not five minutes ago.I saw him not five minutes ago.He was wide awake not five minutes ago.类似地，英语可以说not ten years ago, not six months ago, not three days ago吗？