题目：He _____ at the meeting this morning. He was in hospital at the time.A. couldn't have spokenB. mustn't have spokenC. shouldn't have spokenD. needn't have spoken我选择了mustn't have spoken，而正确答案是A。并且给出的解析是：1.没有mustn't have done 这个结构。2....
We believe this is a great step forward.请问老师这个句子forward为什么要后置？
错在哪里？It is inertia what makes a big truck harder to stop, or turn, or get moving again.
Demonstrations were held as a gesture of solidarity with the hunger strikers.不明白这个句子的结构和意思, 能帮忙分析一下吗?
Not a single mistake did he make.语法书上说：“具有否定意义的副词或词组，置于句首，担任状语时，要用倒装。”这句是什么情况？Not修饰数词的副词担任状语连同single mistake一起置于句首倒装？
But gradually, what began as a way for Jim to experience inclusion and equality served its purpose.问：这个句子不会翻译，尤其what，请老师帮忙翻译一下？
They use eyes in a wrong way,including reading in bed. including什么用法呢？
文章背景：成堆的不想要的衣服怎么办？hold a clothing swap，交换衣服代替购买，几个朋友带着自己的衣服聚到一起开个swap party，既能解决不想要的衣服，还可以寻觅自己喜欢的衣服。（来自2021年高考英语全国甲卷）句子：Invite 5...
ahead of与before和in front of的区别是什么？据我所知，before可以表示动态或时间，in front of可以表示静态。那么ahead of侧重什么？情不自禁做某事 can't stop doing sth 还是 can't help doing sth. 或者两者均是？小数后...
...tune ▲fortune cookie▲gumbo ▲nachos▲chip ▲cheese▲spicy ▲ethnic▲admit ▲definitely▲occur ▲downtown▲mission ▲district▲gr...
请问老师：per 有哪些具体用法，它与 a, each, every 有何区别？
What researchers desire to do is aim to find a new cure for the disease.这个句子中is 和aim 都是动词吗？请帮我分析这个句子
A 7-year follow-up showed that binge-eating,not purging , was predicted by frequently dieting. 其中分词not purging 是什么用法？修饰全句吗？
请分析下面句子结构。They settled in Seattle, by when he had obtained a master's degree in economics.
The United States led the creation of international agreements on air transportation, enabling the creation of a global air industry. 请老师帮忙分析结构，谢谢！