單數(shù)句變復數(shù)句歌謠：
單數(shù)句變復數(shù)句, 代詞四變要記住。
人稱,指示,反身變 物主代詞看一看。
連系動詞 am is 變成 are。
冠詞a an要去掉，改為some,any也可以。
名詞做定語，介賓不要變；有man和woman也例外。
句式不要變，十全十美題做完。
1人稱代詞由單數(shù)變復數(shù)：
1 主格 I we ，you you ，he/she/it they .
2 賓格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 指示代詞由單數(shù)變復數(shù)：
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 反身代詞：
第一人稱 myself ourselves
第二人稱 yourself yourselves
第三人稱 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 themselves draw these pictures.
4 物主代詞由單數(shù)變復數(shù)：
1 名詞性物主代詞：mine ours ，yours yours ，
his/hers/its theirs
2 形容詞性物主代詞：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 一般情況下，形容詞性物主代詞在單數(shù)句變復數(shù)句時不變。
例1 This is my book . These are my books .
6 當句中形容詞性物主代詞與句中的主語一致時，形容詞性物主代詞
應隨主語人稱的變化而變化， 仍要保持一致。
例1 He likes his bike. They like their bikes.
7 連系動詞由單數(shù)變復數(shù) ：is/am are
例1 I am a teacher. We are（some） teachers.
8 a/an表示一個，只能用在單數(shù)名詞前，當單數(shù)句變復數(shù)句時，
一定要把a/an去掉，或改為some/any。
例1 This is a book . These are（some）books .
例2 Is that a pen？ Are those（any）pens？
9 當名詞作定語或在介詞短語中作介詞賓語充當除賓語以外的
其它成分時， 該名詞不變。
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 單數(shù)句變?yōu)閺蛿?shù)句時，句式不能改變，即單數(shù)句是疑問句時，
變?yōu)閺蛿?shù)句時，仍然是疑問句。
例1 What’s this？ What are these？
例2 She likes his bike. They like their bikes.
可數(shù)名詞的復數(shù)形式的部分規(guī)則
1 一般情況加s，結尾是清輔音讀[s]，結尾是濁輔音或元音讀[z]。
例：friend→friends; cat→cats; style→styles; sport→sports;
piece→pieces
2 以s、x、ch、sh結尾的詞，在該詞末尾加上后輟-es構成復數(shù)。
讀[iz]。
例：bus→buses; quiz→quizzes; fox→foxes;
match→matches; flash→flashes
3 以輔音字母+y結尾的名詞，將y改變?yōu)閕，再加-es。
讀[z]。
例：candy→candies; daisy→daisies; fairy→fairies;
lady→ladies; story→stories
4 以-o結尾的名詞，有生命的加-es，無生命的加-s構成復數(shù)。
讀[z]。
例：tomato→tomatoes; potato→potatoes;
torpedo→torpedoes;bingo→bingoes （有生命）
例：silo→silos; piano→pianos;
photo→photos; macro→macros（無生命）
5 以-f或-fe結尾的名詞，多為將-f或-fe改變?yōu)?ves，但有例外。
讀音變化：尾音[f]改讀[vz]。
例：knife→knives; life→lives; leaf→leaves; staff→staves;
scarf→scarves 反例：roof→roofs
6 以-ce se ze（d）ge等結尾的名詞，加-s，讀[z]。
例price—prices case—cases orange—oranges
名詞的不規(guī)則變化：
man→men; woman→women; child→children; people→people;
fish→fish; sheep→sheep; deer→deer; foot→feet;
mouse→mice; tooth→teeth;
單數(shù)句變復數(shù)句精煉
一 將下列單數(shù)句變?yōu)閺蛿?shù)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 將下列復數(shù)句變?yōu)閱螖?shù)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 將下列名詞變?yōu)閺蛿?shù)形式
map egg apple orange pen
box bus girl boy baby
knife photo tomato man woman
milk water desk table bike
單數(shù)句變復數(shù)句精煉答案
一 將下列單數(shù)句變?yōu)閺蛿?shù)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 將下列復數(shù)句變?yōu)閱螖?shù)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 將下列名詞變?yōu)閺蛿?shù)形式
maps eggs apples oranges pens
boxes buses girls boys babies
knives photos tomatoes men women
milk water desks tables bikes
