單數(shù)句變復(fù)數(shù)句(附練習(xí)及答案)

1、單數(shù)句變復(fù)數(shù)句歌謠:單數(shù)句變復(fù)數(shù)句單數(shù)句變復(fù)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(dòng)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(fù)數(shù):主格Iweyouyouhe/she/itthey賓格meusyouyouhim/her/itthem例 1 She is a girl . They are girls .例 1 This is a book .例 2 Is that a pen3反身代詞：第一人稱例 2 I like her. We lik

2、e them.2指示代詞由單數(shù)變復(fù)數(shù):單數(shù)復(fù)數(shù)thisthesethatthoseThese are (some) books .Are those (any) pens?myself ourselves第二人稱yourselfyourselves第三人稱himselfthemselves(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

3、these pictures.4物主代詞由單數(shù)變復(fù)數(shù):1 名詞性物主代詞： mine ours , yours yours , his/hers/its theirshis/her/its their2 形容詞性物主代詞： my our， your your ，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(fù)數(shù)句時(shí)不變。例 1 This is my book . These are my books .6 當(dāng)句中形容詞性物主代詞與句中

4、的主語一致時(shí)，形容詞性物主代詞應(yīng)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(dòng)詞由單數(shù)變復(fù)數(shù)： is/am are例 1 I am a teacher. We ar（e some）teachers.8 a/an 表示一個(gè)，只能用在單數(shù)名詞前，當(dāng)單數(shù)句變復(fù)數(shù)句時(shí)，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(dāng)名詞作定語或在介詞短

5、語中作介詞賓語充當(dāng)除賓語以外的其它成分時(shí)， 該名詞不變。例 1 He is a boy student .They ar（e 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?fù)數(shù)句時(shí)，句式不能改變，即單數(shù)句是疑問句時(shí)，變?yōu)閺?fù)數(shù)句時(shí)，仍然是疑問句。例 1 What s th？is What are these？例 2 She likes his bike. They like their bikes.可數(shù)名詞的復(fù)數(shù)形式的部分規(guī)則1 一般情況加s,結(jié)尾

6、是清輔音讀s,結(jié)尾是濁輔音或元音讀zo例：friend ffriends; cat fcats; style fstyles; sport fsports; piece fpieces2以s、x、ch、sh結(jié)尾的詞，在該詞末尾加上后輟-es構(gòu)成復(fù)數(shù)。讀 iz 。例：busfbuses; quiz fquizzes; foxffoxes;matchfmatches; flash fflashes3以輔音字母+y結(jié)尾的名詞，將y改變?yōu)閕,再加-es。讀z。例：candyfcandies; daisy fdaisies; fairyffairies;lady fladies; story fstor

7、ies4以-o結(jié)尾的名詞，有生命的加-es,無生命的加-s構(gòu)成復(fù)數(shù)。讀z。例：tomato ftomatoes; potato fpotatoes;torpedo ftorpedoes;bingo f bing oes 生命)例：silo fsilos; piano fpianos;photo f photos; macro fmac ros 生命)5以-f或-fe結(jié)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 fknives; life flives; leaf fleaves; staff fstaves;scarf f scarve蚊傷

8、J： roof froofs6以-ce se ze(d) ge等結(jié)尾的名詞，力口 -s,讀z。例 price prices case cases orange oranges名詞的不規(guī)則變化：marr men; womans women; child fchildren; people fpeople;fishffish; sheepfsheep; deer fdeer; footffeet;mouses mice; tooth fteeth;單數(shù)句變復(fù)數(shù)句精煉將下列單數(shù)句變?yōu)閺?fù)數(shù)句1 This is a book .2 Is that a pen？3 She is a girl .4 I l

9、ike 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.將下列復(fù)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（ s

10、ome） books .9 Are those（ any） pens？10They like my bikes.將下列名詞變?yōu)閺?fù)數(shù)形式單數(shù)句變復(fù)數(shù)句精煉答案將下列單數(shù)句變?yōu)閺?fù)數(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.將下列復(fù)數(shù)句變?yōu)閱螖?shù)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 T