请问下面句子中的 that 引导的是定语从句吗？这个 that 的先行词是什么？它可以换成 as 吗？谢谢！We worked in the same office that would be convenient for us to meet each other.要是我们在同一个办公室上班，我们彼此见面就会很方便。
请问曹老师，when和while这里引导的分别是什么从句，while doing是什么用法？Its Intelligent Transport System tells drivers when roads are crowded, while changing traffic lights and
planning alternative routes that drivers can follow.
1）Robert is
said to have studied abroad，but I don't know where he was in.2）Robert is
said to have been studying abroad，but I don't know
where he was in.3）Robert is
said to be studying abroad，but I don't know where he is in.请教专家老师，上面3句都是正确的吗？为什么呢...
...about后面除了通常接名词或代词作宾语外，也可接疑问词引导的从句，此时的介词about有时可省略。如：We’re curious (about)
why he didn't come. 我们很好奇他为什么没来。She is always
curious (about) what we are doing. 她总是爱打我们在做什么...
老师您好：麻烦请教下，of引导的介词短语是不是只能修饰名词? 但是下面几个句子是在修饰形容词吗？Which is the more expensive of the two rings?Tom is the taller of the twins.February is the shortest of all the months如果是在修饰形容词，那of介词短...
...照此分析，so hard 又是什么成分呢？第二空填 That，用以引导主语从句 (此 that 不可省略)，其后的谓语和宾语等被省略，若补充完整，即为 That she was a woman made her struggle to
become an artist so hard.2. Now everyone here was working hard and doing wha...
...ng sth。”
2. agree 后接宾语从句的用法：agree 可以后接that引导的宾语从句，that也可以省略。例如：
I agree that he should be invited. 我同意邀请他。（摘自《剑桥高阶英汉双解词典》2008年1月第1版p.44）
We agree (that) the proposal was a good ...