定语从句与强调句.pptxVIP

一、 限定性定语从句 That既可代表事物也可代表人，which代表事物；它们在从句中作主语或宾语，that在从句中作宾语时常可省略关系词，which在从句中作宾语则不能省略。而且，如果which在从句中作“不及物动词＋介词”的介词的宾语，注意介词不要丢掉，而且介词总是放在关系代词which的前边，但有的则放在它原来的位置 2. which作宾语时，根据先行词与定语从句之间的语义关系，先行词与which之间的介词不能丢 3. 代表物时多用which，但在带有下列词的句子中用that而不用which，这些词包括all, anything, much等，这时的that常被省略 ;4. who和whom引导的从句用来修饰人，分别作从句中的主语和宾语，whom作宾语时，要注意它可以作动词的宾语也可以作介词的宾语 5. where是关系副词，用来表示地点的定语从句 6. when引导定语从句表示时间 〔注〕值得一提的是，表示时间“time一词的定语从句只用when引导，有时不用任何关系代词，当然也不用that引导 By the time you arrive in London, we will have stayed there for two weeks. I still remember the first time I met her. Each time he goes to business trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc. ; 7. whose是关系代词，修饰名词作定语，相当于所修饰成分的前置所有格 二、非限定性定语从句：非限定性定语从句的作用是对所修饰的成分作进一步说明，通常和主句间用逗号隔开，将从句拿掉后其他部分仍可成立 1. which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分 2. 在非限定性定语从句中，不能用that，而用who, whom代表人，用which代表事物 ;常考的强调句结构是it 引导的句子。 It is (was) 被强调部分+ that (who) + 句子其他部分。 此结构强调的成分仅限于主语，宾语和状语。 It is from the sun that we get light and heat. It was not until I had read your letter that I understood the true state of affairs. ;? 原句： My father did the experiment in the lab yesterday evening. 强调主语： It was my father who did the experiment in the lab yesterday evening. 强调宾语： It was the experiment that my father did in the lab yesterday evening. 强调时间： It was yesterday evening that my father did the experiment in the lab. (注意不用when) ;强调地点： It was in the lab that my father did the experiment yesterday evening. ? 2）It is ten years ___ Miss Green returned to Canada. A. that B. when C. since D. as