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 I we you you he/she/it they宾格 me us you you him/her/it them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
2、this these that those例 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 thi
3、s picture. The children 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 theirs2 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
4、 . These are my books .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
5、 pen？ Are those（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 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 th
6、eir bikes.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：friendfriends; catcats; stylestyles; sportsports;piecepieces2 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; flashflashes3 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;
7、ladyladies; storystories 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;scar
8、fscarves 反例：roofroofs6 以-ce se 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
9、. 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 ）b
10、ooks .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
11、like their bikes.二 将下列复数句变为单数句1 What is this？2 He likes his bike3 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 knives photos tomatoes men womenmilk water desks tables bikes
