小學(xué)英語(yǔ)三單講解

一\三單用法

第三人稱單數(shù)形式，簡(jiǎn)稱“三單”。在一般現(xiàn)在時(shí)態(tài)中，

當(dāng)主語(yǔ)為第三人稱單數(shù)時(shí)，其后動(dòng)詞要用三單形式。be動(dòng)詞

(am/is/are)的三單形式為is；其它動(dòng)詞的變形規(guī)律為：

一般動(dòng)詞加s,如take/play等；以s/sh/ch/x/o結(jié)尾的動(dòng)

詞加es,如miss/wash/watch/go/do等；以輔音字母加y結(jié)尾

的動(dòng)詞變y為ies,如study/carry/fly等;特殊變形:have―has。

二'習(xí)題精煉

(一)用所給詞的適當(dāng)形式填空

1.Thebird(fly)highinthesky.

2.She(be)inourschool.She(dance)verywell.

3.1(find)mycousininthegarden.

4.Myfatherandmother(go)fishingonSundays.

5.Lily(like)climbingthemountains.

6.Afterschool,healways(have)greatfunwithus.

7.Swimming(be)hisfavouritelesson.

8.Suyang(notlike)mydog.

9.Mylittlebrother(carry)anumbrellaeveryday.

10.Theguide(show)usaround.

(二)單項(xiàng)選擇

-1-

1.Mytwinsisterherhomeworkeveryday.

Adon'tdoBdoesn'tdoCdon'tdoes

2.Thisfishcanfastinthesea.

AswimsBswimCswimming

3.Nancysomeanimalfriends.

AhasBhaveCishaving

4.Heresomebooksforyou.

AisBareCam

5.Therenodogsintheroom.

AisBwasCare

6.Therabbitredeyesandashorttail.

AhaveBhasCishaving

7.youananimalfriend,Linda?

ADo/haveBDoes/haveCDid/had

8.Thegoldfishnoarmsorlegs.

AhasBhaveChad

9.Theyfromdifferentcountries.Theyfriends.

Acome/areBcomes/areCcome/is

10.Mymotheroftenclothesatnight.

AwashsBwashCwashes

-2-

（三）寫(xiě)出下列詞語(yǔ)的三單形式

1.make_____2.buy_____3.fish____

4.sweep____5.hurry_____6.go_____

7.are8.fix9.1ike

10.study___11.wash__12.dress_

13.try__