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语法精讲定语从句 定语从句的关系代词和关系副词的选择关键是要注意分析它们在从句中所作的句子成分，如果作主语、宾语、表语、定语，则用关系代词which,that,who,whom,whose；若作状语，则用关系副词when,where,why。 注意下列情况： 1.只用that （1）当先行词是不定代词，如all,everything,anything,nothing,much,few,little,none,the one等时。 （2）先行词（指物的）前面有only,few,one of,little,no,all,every,very等词修饰时。 （3）先行词被序数词first,last,next等或形容词的最高级修饰时。 （4）当先行词既有人又有物时。 （5）当先行词是系动词be后面的表语或关系词本身是从句的表语时。如： China isn’t the country that she used to be 50 years ago. He is no longer the man that he used to be. It’s a book that will help you a great deal. （6）当主句是以who,which或what开头的特殊疑问句时。 （7）当主句以There be…结构开头时。如： There is a seat in the corner that is still free. There are two tickets of the film that are for you. （8）当先行词是what时，如： What did you hear that made you so angry? | 
