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1、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a an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Iweyouyouhe/she/itthey宾格meusyouyouhim/her/itthem 例1 She is a girl . They are girls . 例2 I like her. We like them.2 指示代词由单数变复数：单数复数thisthesethatthose 例
2、1 This is a book . These are（some）books . 例2 Is that a pen？ Are those（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1 I am teaching myself computer. We are teaching ourself computer. 例2 The child himself draws this picture. The children
3、 themselves draw these pictures. 4 物主代词由单数变复数： 1 名词性物主代词：mine ours ，yours yours ， his/hers/its theirs 2 形容词性物主代词：my our，your your ，his/her/its their 例1 The book is mine. The books are ours. 例2 This is her pen. These are their pens. 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1 This is my book . These are my books
4、 . 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1 He likes his bike. They like their bikes.7 连系动词由单数变复数 ：is/am are 例1 I am a teacher. We 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1 This is a book . These are（some）books . 例2 Is that a pen？ Are those（any）pen
5、s？ 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1 He is a boy student .They are（some）boy students.（man和woman）除外。 例2 She is a woman worker. They are（some）women workers.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1 Whats this？ What are these？ 例2 She likes his bike. They like their bikes.可数名词的复数形式的部分规则
6、 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：friendfriends; catcats; stylestyles; sportsports; piecepieces 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：busbuses; quizquizzes; foxfoxes; matchmatches; flashflashes 3 以辅音字母+y结尾的名词，将y改变为i，再加-es。 读z。 例：candycandies; daisydaisies; fairyfairies; ladyladies; storystories
7、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：tomatotomatoes; potatopotatoes; torpedotorpedoes;bingobingoes （有生命） 例：silosilos; pianopianos; photophotos; macromacros（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：knifeknives; lifelives; leafleaves; staffstaves;scarfscarves 反例：roofroofs 6 以-ce se
8、 ze（d）ge等结尾的名词，加-s，读z。 例priceprices casecases orangeoranges 名词的不规则变化： manmen; womanwomen; childchildren; peoplepeople; fishfish; sheepsheep; deerdeer; footfeet; mousemice; toothteeth; 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 Thi
9、s 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（a
10、ny）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 .
