The city at one time must have been prosperous, for it enjoyed a high level of civilization.想问下这句话中at one time 都可以放在句子的什么位置，可以放在been之后吗？还有must have been 是推测的用法吗，可以详细解释一下吗，谢谢~
The air then passes to a compressor, where it is compressed, and from which it is delivered to the combustion chambers.在and from which it is delivered to the combustion chambers. 为什么不是from where ？ 用from which 和 from where究竟理解上有何不同？
老师，我在 VOA Special English中看到这么一句话：【A Vietnamese court
sentenced journalist Pham Chi Dung to 15 years in prison on Wednesday.】【越南一家法院周三判处记者范志勇(Pham Chi Dung) 15年监禁。】我的问题是：在牛津词典中，我查了court这个词...
His lawyer Jack is withdrawing his request to not hold the impeachment trial on the Jewish Sabbath, according to a person familiar with trial planning, which had altered the likely schedule for the proceedings.这里的which修饰的对象是什么？是前面整个句子？还是前面的某个...
Last year the number of nuptials fell by 12％ to a little over
8m,the lowest since 2003and well down on the peak of 13.5m in 2013. 请问 well down两个词在句子中分别是什么词性？
That would make their rulings more likely to be seen as separate from politics and, as a result, convincing as law.这会让他们的裁决更被人视为是远离政治的，而且被奉为律例。问题: convincing 从句义上应该是被动的，被看作，那为什么不用过去分词而用...
...高中英语新教材必修一的 Unit 1（p11）有这样一句：Good habit formed
at youth make all the difference.—Aristotle在词典上可以查到 make a
difference，意思是“有影响”“有关系”“起作用”，但没有查到 make all the difference 的意思和用法。
老师，我在一个杂志上看到这么一句话：The most important thing a
father can do for his children is to love their mother.【一个父亲能为他孩子做的最好事情，就是好好爱他的妈妈。】我想问，这里谓语动词is后面的to改成that可以吗？两者的区别...
这是个电影台词：I know you’ve been calling. I haven’t had time to schedule a follow-up.关于该句有以下疑惑，还望老师指点：1.通过以上两句，能否判断出说话人用现在完成时表示的是状态(持续到现在的状态) 还是事件(因为没有时间所以...
The news that only around half as many mainlanders are coming to the US to study now as before the pandemic seems a harbinger of worse to come.老师，您看句子成分是这样划分吗？划横线的是整个句子的主干，绿色是同位语从句的主干。问题是as many mainlanders是副...
...图片，然后只能用"Is he"或者"Is she"来填空问：____________ a woman?回到：No, __________.问这句，Is she对吗？填Is it也是对的吧？我记得分不清男女应该用it，但是题目非要用Is he或Is she填空回答这句：应该是No, she isn't. 还是No, he isn't.?
Mizhi is the only
one of the five sites of which there was a clear record of its specific
location: to the south of the Weihe River. The site's location fits with this
record, according to You.请老师分析一下定语从句中的of which,大意理解，就是句子结构分析不太清晰。谢...