单数句变复数句(附练习及答案).doc

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                 2形容词性物主代词:my our,youryour,his/her/itstheir
                       .
                       .
   5一般情况下,形容词性物主代词在单数句变复数句时不变。
                      例1Thisismybook.    Thesearemybooks.
   6当句中形容词性物主代词与句中的主语一致时,形容词性物主代词
       应随主语人称的变化而变化, 仍要保持一致。
                     例1Helikeshisbike. Theyliketheirbikes.
     7连系动词由单数变复数:is/am are
                     (some) teachers.
    8 a/an表示一个,只能用在单数名词前,当单数句变复数句时,
         一定要把a/an去掉,或改为some/any。
                      例1Thisisabook.    Theseare(some)books.
                      例2Isthatapen?     Arethose(any)pens?
  9当名词作定语或在介词短语中作介词宾语充当除宾语以外的
      其它成分时,  该名词不变。
          (some)boystudents.
                          (man和woman)除外。
                    例2Sheisawomanworker.
                           Theyare(some)womenworkers.
      10单数句变为复数句时,句式不能改变,即单数句是疑问句时,
         变为复数句时,仍然是疑问句。
                  例1What’sthis? Whatarethese?
                例2Shelikeshisbike. Theyliketheirbikes.
 可数名词的复数形式的部分规则
     1 一般情况加s,结尾是清辅音读[s],结尾是浊辅音或元音读[z]。
         例:friend→friends;cat→cats;style→styles;sport→sports;
               piece→pieces
     2 以s、x、ch、sh结尾的词,在该词末尾加上后辍-es构成复数。
         读[iz]。
       例:bus→buses;quiz→quizzes;fox→foxes;
               match→matches; flash→flashes
   3 以辅音字母+y结尾的名词,将y改变为i,再加-es。        读[z]。
      例:candy→candies;daisy→daisies;fairy→fairies;
             lady→ladies;story→stories
  4 以-o结尾的名词,有生命的加-es,无生命的加-s构成复数。     读[z]。
        例:tomato→tomatoes;potato→potatoes;
                 torpedo→torpedoes;bingo→bingoes(有生命)
        例:silo→silos;piano→pianos;
                 photo→photos;macro→macros(无生命)
  5 以-f或-fe结尾的名词,多为将-f或-fe改变为-ves,但有例外。
        读音变化:尾音[f]改读[vz]。
         例:knife→knives;life→lives;leaf→leaves;staff→staves;
                 scarf→scarves反例:roof→roofs
  6 以-ceseze(d)ge等结尾的名词,加-s,读[z]。
          例price—prices case—cases orange—oranges
           名词的不规则变化:
      man→men;woman→women;child→children;people→people;
      fish→fish;sheep→sheep;deer→deer;foot→feet;
      mouse→mice;tooth→teeth;
   单数句变复数句精炼
一将下列单数句变为复数句
        1Thisisabook.
        2Isthatapen?
       3Sheisagirl.
       4Ilikeher.
        5Thebookismine.
        6Thisisherpen.
        7Iamateacher.
        8Heisaboystudent.
        9Sheisawomanworker.
        10Helikeshisbike.
二将下列复数句变为单数句
        1Whatarethese?
        2Theyliketheirbikes.
        3Thesearemybooks.
         4Theseare(some)books.
         5Arethose(any)pens?
        6Theyaregirls.
       7Welikethem.
       8Theseare(some)books.
        9Arethose(any)pens?
        10Theylikemybikes.
三将下列名词变为复数形式
        
              单数句变复数句精炼答案
一将下列单数句变为复数句
           1Theseare(some)books.
           2Arethose(any)pens?
           3Theyaregirls.
           4Welikethem.
           5Thebooksareours.
            6Thesearetheirpens.
           7Weare(some) teachers.
           8Theyare(some)boystudents.
            9Theyare(some)womenworkers.
           10Theyliketheirbikes.
 二将下列复数句变为单数句
            1Whatisthis?
          2Helikeshisbike
          3Thisismybook.
          4Thisisabook.
            5Isthatapen?
          6Sheisagirl.
           7Ilikeher.
           8Thisisabook..
           9Isthatapen?
          10Helikesmybike.
三将下列名词变为复数形式
          maps     eggs     apples     oranges     pens 
           boxes      buses     girls      boys       babies 
           knives     photos   tomatoes     men      women
           milk     water    desks     tables      bikes