代词是什么直接写词

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代词是什么
直接写词

一.概念:
  代词是代替名词的词,按其意义、特征及其在句中的作用分为:人称代词、物主代词、指示代词、反身代词、相互代词、疑问代词、不定代词和关系代词等.
  二.相关知识点精讲
  1.人称代词
  1)人称代词的人称、数和格,如下表所示.
  2)人称代词有主格和宾格之分.通常主格作主语,宾格作宾语.如:
  I like table tennis.(作主语)
  Do you knowhim?(作宾语)
  3)人称代词还可作表语.作表语时用宾格.如:
  ---Whos is knocking at the door?
  ---It’s me.
  4)人称代词在than之后与其他人或事物进行比较时,用主格和宾格都可以.如:
  He is older than me.
  He is older thanI am.
  2.物主代词
  1)表示所有关系的代词叫物主代词.物主代词分形容词性物主代词和名词性
  物主代词,如下表所示.
  2)形容词性物主代词的作用相当于形容词,可在句中作定语.例如:
  Our teacher is coming to see us.
  This is her pencil-box.
  3)名词性物主代词的作用相当于名词,在句中可用作主语、宾语和表语.
  Our school is here,and theirs is there.(作主语)
  --- Is this English-book yours?(作表语)
  --- No.Mine is in my bag.
  I've already finished my homework.Have you finished yours?(作宾语)
  3.指示代词
  指示代词包括:this,that,these,those.
  1) this和these一般用来指在时间或空间上较近的事物或人,that和those
  则指时间和空间上较远的事物或人,例如:
  This is a pen andthat is a pencil.
  We are busy these days.
  Inthose days the workers had a hard time.
  2)有时that和those指前面讲到过的事物,this 和these则是指下面将要讲
  到的事物,例如:
  I had a cold.That's why I didn't come.
  What I want to say is this ; pronunciation is very important in learning English.
  3)有时为了避免重复提到的名词,常可用that或those代替,例如:
  Television sets made in Beijing are just as good as those made in Shanghai.
  4)this 在电话用语中代表自己,that 则代表对方.例如:
  Hello!This is Mary.Is that Jack speaking?
  4.反身代词
  英语中用来表示"我自己","你自己","他自己","我们自己","你们自己"
  等意义的代词称为反身代词,也有人称之为自身代名词,其形式如表所示.
  反身代词可以在句中作宾语,表语,同位语.
  1)作宾语,表示动作的承受者就是动作的发出者,主语和宾语指同一个人
  或一些人.
  He called himself a writer.
  Would you please express yourself in English?
  2)作表语.
  It doesn't matter.I'll be myself soon.
  The girl in the news is myself.
  3)作主语或宾语的同位语,表示亲自或本人.
  I myself washed the clothes.(=I washed the clothes myself.)(作主语同位语)
  You should ask the teacher himself.(作宾语同位语)