They check both the quantity and quality of materials used. 他们检查所使用材料的数量和质量。这句中的 used 是过去分词作定语修饰名词 materials 吧！这从它的翻译也可以看出来。我要请教的是：这个作定语的过去分词 used 可以放在前面吗？
When I did my homework,my father came back.这个句子对吗？ 前面的did，，，一定要改成was doing吗？When I lived in the countryside,I worked for a newspaper.这样可以吗？when 的主从句时态，有什么规律吗？老师可以给我讲一下吗？
请问 here are 是存在句吗？ 还是说here是个副词,它的位置可以移动？比如：Here are your cigarettes in the refrigerator. 是否可以写作：Your cigarettes are here in the refrigerator.There are your cigarettes in the refrigerator.
老师好！1.She appeared on the cover of the magazine _______ his bravery and hard work during the outbreak. 2.She is looking for safe ways to get outside and exercise _______(由于) the Covid-19 crisis.可以填什么呢？for,since,as后面除了加句子，还可以加短语吗?
1. I bought many books，on which I spent all my money that I saved.这里为什么用on which?on which可以用哪个关系副词代替呢？2. The colorless gas without which we cannot live is called oxygen.什么用without which呢?without which可以用哪个关系副词代替？
...出 than 后的 what 必须去掉。作者认为than 类似关系代词，可以代替其后的主语或宾语，该书原话为："than" and "as" can take the place of subjects in clauses(rather like relative pronouns)。但是，在英语书刊中我们可以经常看到很多than后使用what的...
...ve Grammar of English Language》中有关状语的相关章节时，经常可以遇到“Cooccurrence”这一术语，汉译本将其翻译为“同现”，维基百科对其的解释是：“In linguistics, co-occurrence or cooccurrence is an above-chance frequency of ordered occurrence of...
英语可能说 It is honest of sb to do sth 吗？比如：It is honest of him to tell us his past.如果可以的话，可以换成 Sb is honest to do sth 吗？我查词典没有查到类似的例句。如果真可以的话，麻烦提供一下词典上的例句。谢谢！