http://www.yygrammar.com/Article/201310/3456.html 这个链接上面讲“worthy of后面意义上是主动就用主动，是被动就用被动”，那这里在意义上是被动，为什么用了主动呢？
I have heard a lot of Bob.a lot 是什么词性，为什么?
老师你好！上面work out是想出的意思，那么它和think of 想出有什么区别?
Xiling Gorge is the largest and most downstream—eastern of the famous Three Gorges.该句话中的 most downstream —eastern of the famous Three Gorges 怎么理解？谢谢!
There are two students to every member of staff. to every member of staff 做什么成分？怎么翻译它合适，是表示对象吗？
On reading over what I have written of the Stricklands, I am conscious that they must seem shadowy.上面是write of 结构吗？ 和write about有什么区别呢？
all kinds of后面接不可数名词做主语时，谓语动词用单数还是复数？比如：all kinds of music后面用is还是are？ 如果用在there be句型中呢？ 比如：There is/are all kinds of music?
这三个介词都可以表“从……得到”，如get the truth from/out of/off the old man.请问其区别在哪里？谢谢
a line of trees作主语谓语用单还是复数，比如 a line of trees 后的动词用stand 还是 stands？
among 和 of 在表示“在...之中”时的区别。例如：" While you are the youngest, you are indeed the cleverest of / among my sons," the old merchant said. 那么两者在这个句子中可否互换呢，用在句子开头，又是什么区别呢？
...后面接动名词作宾语要满足什么条件？？？如，be afraid of后可以接doing，而be proud of后却不能接doing. 牛津词典中sign后接of sth,that，例句中却出现of doing. The gloom weather shows no sign of improving. 为何of后面有时可以接动名词作宾...
...句只能修饰名词或名词性成分吗？2. They called for regulation of what it called the “chaos” of the industry.what引导的名词性从句是只能叫名词性从句吗？不是主从、也不是宾从、表语从句、同位语从句。
立春翻译成英文是Beginning of Spring, 为什么前面不加定冠词 the 呢？普通名词变成专有名词不是应该加定冠词的吗？冬奥会开幕式里立春的英文翻译是Beginning of Spring, 应该是比较权威的翻译。但是我不太明白，这里为什么不用定冠...
His mother retired early on account of poor health. 句中的on account of可以换成with保持意思不变吗？
That I should call upon anyone else is a thing undreamt of.句中of为什么后置了为什么不直接写成an undreamt thing？