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1、形容词性从句-定语从句,限定性定语从句和非限定性定语从句的区别。,定语从句分为限定性定语从句和非限定性定语从句。,非限定性定语从句用逗号隔开限定性定语从句不用逗号,The man who is carrying a black bag is a professor.Mr.White said the test would be easy,which delighted me a lot.,限定性定语从句对被修饰词起到限制、修饰的作用，一般不可缺少。非限定性定语从句起补充、附带说明作用，缺少也不会影响全句的理解。,e.g.The man who is wearing a black suit i
2、s my boss.She said she had finished her work,which I doubted very much.,The earth,which goes around the sun,is a ball-like planet.地球是一个球型的星球，它围着太阳转。The earth which goes around the sun is a ball-like planet.那个围着太阳转的地球是一个球型的星球。*非限定性定语从句不用that或者why引导。,非限定性定语从句起补充说明作用。限定性定语从句起限制修饰作用。,限定性定语从句修饰名词或者代词非限定性
3、定语从句修饰名词，代词或者整个主句。,All that glitters is not gold.闪光的不全是金子。The sun provides the earth with heat and light,which makes it possible for plants to grow.太阳供给地球光和热，这使得植物生长有了可能。,限制性定语从句中关系代词作宾语时可以省略非限制性定语从句中，关系代词不能省略,He is the man(whom)I want to see.Her teacher,whom we saw the day before yesterday,had comp
4、leted thirty years of teaching.,The end,4.只用that，不用which的情况：当先行词有序数词或形容词最高级修饰时；当先行词前有the only,the very,the last等词修饰时；当先行词为anything,nothing,something,everything,all,little,much等不定代词修饰时；当先行词前有all,every,no,some,any,little,much,few等词修饰时；,5.只用which，不用that的情况：引导非限制性定语从句时；引导词前有介词时；一个句子中若有两个定语从句，一个用that引导，另一个用which引导；e.g.He bought a book that could give him much knowledge and which could help him to kill the time.6.当those作为先行词指人时，通常只能用who引导；,
