The physicist has made a discovery , which I think is of great importance to the progress of science and technology. 为什么which 引导的非限制性定语从句中会出现think 和 is 两个谓语 ，想通过句子结构分析了解为何会存在两个谓语。
...rather than the lasagnas, tofu and other products that shoppers often buy. Where research has focused on consumer products, it has usually been for a small number of them.请教老师：粗体字句子句首词where在文中的的语法作用。
Up Broadway he turned, and halted at a glittering café, where are gathered together nightly the choicest products of the grape, the silkworm and the protoplasm.他拐到百老汇路，在一家灯火辉煌的餐馆门前停了下来，每天晚上，这里汇集着葡萄、蚕丝与原生质的最...
A judge agreed to postpone a hearing in which the FBI was seeking to force Apple to help unlock an iPhone used by a dead terrorist.请问：如何理解句中的 in？in which 在这句中可以换成 where 吗？
...happened, he would not mind. (=Whatever happened, he would not mind.)让步状语从句的连接词是no matter what,还是no matter？可以认为what happened是一个名词性从句，而no matter是一个名词性的让步状语从句连接词吗？whatever happened可以认为是一个名词性...
... the expense of technology or vice versa 【主语从句】//often【频度状语】 //depends on【谓语动词】// the issue of which is seen as the driving force.【宾语】在该句中，最后这部分，of which…force做the issue的后置定语，which为宾语从句连接代词，of表示...