Whittingham started his research into lithium batteries in the 1970s at a time when world oil prices were high and energy availability a big concern. and 后面的部分是不是少了个 was？
We first went up a mountain to a ridge from where we had fantastic views .问：这个句子中from where we had fantastic views .这个从句是地点状语从句还是定语从句？我记得定语从句中，关系副词where= 介词+which,因为where为关系副词所以其前不能有介词，...
If
you are planning to start a career in the field of education, science, or
culture, then an internship (实习) at UNESCO will be ideal for you.这是2021年高考英语北京卷阅读A中的一个句子。请问专家：UNESCO前面为什么不用冠词？
求教曹老师，对于夸克语法大全中的“缩写和符号（Abbreviations and symbols）”中的副词的位置的符号，如下所示：I（initial position of adverbial）M（medial position of adverbial）E（end position of adverbial）iE（initial-end position of adverbial）iM（ini...
...词组，是做什么状语？修饰哪个部分？Better to top up low wages with public money so that anyone who works has a reasonable income, through a bold expansion of the tax credits that countries such as Americaand Britain use.谢谢老师。
With him was the son of captain of police, a boy of sixteen years of age，who had recently entere the army.这句的主语是a boy of sixteen years of age 吗？可以这么写吗？其中有什么语法知识，可以详细讲解一下吗？
A public safety officer directs drivers where to go last week at a coronavirus testing site.这个句子中where to go是不定时短语做drivers的补足语吗？那么这个where +不定时结构再语法中又自己的名称吗？
a federal judge in California has dismissed a lawsuit against the Coca-Cola company which argued that Diet Coke misled people to believe the drink would help them lose weight.这里which为什么指代lawsuit 而不是the Coca-Cola company ，只能因为翻译逻辑吗？
下列几个例子中，为什么lost 和losing 是这样搭配的？a lost cause 败局已定的人或事lost labour 徒劳a losing battle 必败之仗Everybody thought the battle lost. 败局已定和必败之仗不是同样的意思吗可以具体说说lost和losing的区别吗？