a:( )is that man on the horse? b:he is th

a:( )is that man on the horse? b:he is th

在非限定定语从句中，先行词指人的时候，关系代词只能是who, whom,不能用that；先行词指物的时候，关系代词只能用which,不能用that. \r\n关系代词who的用法：\r\n(1) who的前行词必须是人，在从句中可以担任主语，往往也可以代替在从句中担任宾语的whom,但它的前面不能有介词，如果带了介词就必须用宾格whom(介词+whom) \r\nThis is the teacher who teaches us mathematics.\r\nShe is the girl who(whom) I met at the party.( 可以替代）\r\nShe is the girl whom(who) I went there with.( 可以替代）\r\nShe is the girl with whom I went there. ( 不可替代）\r\n(2)Who, that 在很多情况下可以通用，但有些情况只能用who:\r\n[A] 先行词是one, ones, anyone 的时候宜用who\r\nOne who has nothing to fear for oneself dares to tell the truth. \r\nThe ones who flatter me don't please me. \r\nDon't tell anyone about the news who oughtn't to know it.\r\nAnyone who fails to finish the task given should be criticized. \r\n[B] 先行词为those的时候，宜用who为关系代词\r\nThose who were not fit for their work could not see the beautiful clothes made of the magic cloth. \r\nThose who want to go to the Great Wall sign up here. \r\n[C] 当先行词有比较长的后置定语的时候\r\nI met a foreigner in the street yesterday who could asked me questions in Chinese. \r\n[D] 一个句子中带有2个定语从句，其中一个定语从句的关系代词为that,另一个则用who.\r\nThe boy that you met last night is the group leader who studies very hard.\r\n[E] 在there be 开头的句子中：\r\nThere is an old man who wants to see you.\r\nThere are many young men who are against him.\r\nb)关系代词whose的用法：\r\nwhose是代词的所有格，它既可以代人也可以代物。当代物的时候，它相当于of which.\r\nI saw a woman whose bag was stolen.\r\nI'll call a person whose father knows you.\r\nWhich is the car whose owner you know?(Which is the car the owner of which you know)\r\nPlease show me the book whose cover is red. (Please shoe me the book the cover of which is red.) \r\nc)关系代词that 的用法：\r\n首先特别注意，that只能用在限定性定语从句中，在非限定性定语从句中永远不能选用that,另外介词后边也不可以用that,而是跟which.\r\n在限定性定语从句中，which 和that在代替物的时候，一般可以通用。\r\nThe money that( which) is in the wallet is mine. \r\n有些情况下，只宜用佣that,不宜用which.\r\n[A]先行词世最高级形容词或者它前面有最高级形容词的时候。\r\nThis is the best that has been used against pollution.\r\nEnglish is the most difficule subject that you will learn during these years.\r\n[B]主句中已有疑问词who,which的时候\r\nWhich is the bike that you lost?\r\nWho is the woman that was praixed at the meeting?\r\n[C]先行词是序数词，或者前面有一个序数词地时候\r\nHe is the last person(that) I want to see.\r\nIt is the first American movie of this kind that I've ever seen.\r\n[D]先行词既有人又有物的，宜用that\r\nDo you know the things and persons that they are talking about?\r\nThe bike and its rider that had run over an old man were taken to the police station.\r\n[E]先行词是all, much, little, something, everything, anything, nothing, none, the one等不定代词时[F]先行词前面only, any,few, little, no, all, one of , the same, the very等词修饰的时候

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