定语从句中which和as的区别课件

na is a developing country. ? 众所周知,中国是一个发展中国家。?② Kate was late for school , as often happened.? 正如常常发生的那样,凯特上学迟到了。Р当定语从句位于主句之后,纯粹表示主句所述的内容,含有“这,这一点”的意思时,往往用到which。例如: ? ① He has to go to work by foot, which makes him very tired. ? 他不得不走路上班,这让他很累。? ② Mummy always treats me just like a baby, which I can’t ? bear .? 妈妈总是把我当婴儿对待,这一点我难以忍受。Р3. 在非限制性定语从句中,关系代词指代主句中的先行词时,常用which。例如:? ① The building, which was built last year, is the highest in? our city.? 去年建成的那栋大楼是我们市里最高的。? ② We have a new library, which possesses 10,000 books.? 我们有了一座新的图书馆,拥有10,000本书。Р4. 在“介词+ 关系代词”的结构中,必须用which。例如:? ① There is oxygen around us, without which we couldn’t live.? 我们周围有氧气,没有它我们无法生活。? ② She showed the visitors around the museum, the ? construction of which had taken more than three years. ? 她领着游客们参观了博物馆,其建造花了三年多的时间。