单数句变复数句(附练习及答案).doc

单数句变复数句    单数句变复数句歌谣：                                     单数句变复数句,  代词四变要记住。                                            人称,指示,反身变物主代词看一看。                                            连系动词am is  变成are。                                            冠词aan要去掉，改为some,any也可以。                                            名词做定语，介宾不要变；有man和woman也例外。                                            句式不要变，十全十美题做完。      1人称代词由单数变复数：     主格I weyou youhe/she/it they宾格meusyou youhim/her/itthem          例1Sheisagirl.Theyaregirls.          例2Ilikeher.Welikethem.2指示代词由单数变复数：单数复数this   these that those        例1Thisisabook.    Theseare（some）books.        例2Isthatapen？     Arethose（any）pens？      3 反身代词：　                     第一人称   myself             ourselves　    　             第二人称   yourself          yourselves　　                 第三人称   himself           themselves　　                                 (herself,itself)           例1Iamteachingmyselfcomputer.                     Weareteachingourselfcomputer.　　 例2Thechildhimselfdrawsthispicture.                    Thechildrenthemselves draw thesepictures.　　    4物主代词由单数变复数：                1名词性物主代词：mineours，yoursyours，his/hers/itstheirs                 2形容词性物主代词：my our，youryour，his/her/itstheir                       例1Thebookismine.Thebooksareours.                       例2Thisisherpen.Thesearetheirpens.   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                     例1Iamateacher.Weare（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。          例1Heisaboystudent.Theyare（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-ce se ze（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          1 This is a book .          2 Is that a pen？          3 She is a girl .          4 I like her.          5 The book is mine.          6 This is her pen.          7 I am a teacher.          8 He is a boy student .          9 She is a woman worker.         10 He likes his bike. 二 将下列复数句变为单数句          1 What are these？          2 They like their bikes.          3 These are my books .          4 These are（some）books .          5 Are those（any）pens？          6 They are girls .          7 We like them.          8 These are（some）books .          9 Are those（any）pens？          10They like my bikes. 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              1 These are（some）books .              2 Are those（any）pens？              3 They are girls .              4 We like them.              5 The books are ours.              6 These are their pens.              7 We are（some）  teachers.              8 They are（some）boy students.              9 They are（some）women workers.             10 They like their bikes.  二 将下列复数句变为单数句             1 What is this？              2 He likes his bike              3 This is my book .              4 This is a book .              5 Is that a pen？              6 She is a girl .              7 I like her.              8 This is a book ..              9 Is that a pen？             10 He likes my bike. 三 将下列名词变为复数形式              maps      eggs      apples      oranges      pens               boxes       buses      girls       boys        babies