牛津譯林版英語8A-Unit4-Do-it-yourself-Grammar課件(共38張PPT)

GrammarUnit4Turnleft!GuessingGameTurnright!GuessingGameWalkonthezebracrossing!GuessingGameGuessingGameDon’tsmoke!Nosmoking!GuessingGameDon’tparkyourcar!GuessingGameDon’tpicktheflowers!Readandobserve(觀察)Turnleft!Turnright!Walkonthezebracrossing!Don’tsmoke!Don’tparkyourcar!Don’tpicktheflowers!Theyareallimperativesentences.（祈使句）句子祈使句的結(jié)構(gòu)如下：

dosth

Don’tdosth.肯定：否定：祈使句表示請求、命令、建議等等。謂語動(dòng)詞一律用原形。句子中通常不用主語，句末用感嘆號(hào)或者句號(hào)。Drawtheconclusion(得出結(jié)論)祈使句句式詳解1.

肯定的祈使句

（1）動(dòng)詞原形+其他

Stand

up,

please.

=

Please

stand

up.

請起立。

（2）Be

+

adj.

Be

careful!

=

Look

out!

=

Take

care!

小心

/

當(dāng)心！

（3）Let's

+

動(dòng)詞原形

Let’s

go

to

school

together.

咱們一起上學(xué)去吧。祈使句句式詳解2.

否定的祈使句（1）

Don't

+

動(dòng)詞原形

Don't

stand

up.

別站起來。

Don't

be

careless.

別粗心。

Don't

let

them

play

with

fire.

別讓他們玩火。

（2）Let's

(

let

sb

)

+

not

+

動(dòng)詞原形

Let's

not

say

anything

about

it.

對于這件事，咱們什么也別說。

Let

them

not

play

with

fire.

別讓他們玩火。祈使句句式詳解

與please連用,使語氣委婉

為使語氣委婉，通常將祈使句與please連用。Please可用于祈使句的句首，通常不用逗號(hào)如果用于句末，前面通常用逗號(hào)。如：Pleasedon’tgetangry.請不要生氣。Pleasedrivemoreslowly.請開得慢一點(diǎn)。

Trytobequiet,please.請?jiān)O(shè)法保持安靜。

Putupapictureonthewall.Putupashelfonthewall.TrytogiveinstructionsDon’tswimhere.Don’tparkyourbikehere.Parkyourbikehere.Pleasegoslowly.Don’tsmokehere.Don’tfishhere.Bequiet,please.Don’tmakeanynoise.Howtomakecards1.Cutoutthecard.2.Writesomewordsonthecard.Howtomakecards3.Drawapictureontheothersideofthecard.4.Lookatthepictureandtrytosaywhatisontheotherside.Don’tgiveup.Keeptrying.1--It’sherbirthdaynextweek.--Then___________heraboutthesurprisebirthday.(tell)2–HowcanIgettoPeople’sHospital?--_____alongthestreetand______leftatthelights.don’ttellturn

GoExercises3--Wehavetofinishtheworkintwohours.--Thenlet’s__________anytime.(waste)4--____________somuchnoise,please.--Ok.(make)notwasteDon’tmakeUsingshouldandhadbetterWeuse‘should’and‘hadbetter’whengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.Thetoneofhadbetterisstrongerthanshould.had

better

do

sth

had

better

not

do

sth

It

is

pretty

cold.

You'd

better

put

on

my

coat.

She'd

better

not

play

with

the

dog.shoulddosthshouldnotdosthYoushouldbequietinclass.Youshouldnotbelateforschool.1.PleaseknowalittleaboutDIY.YoushouldknowalittleaboutDIY.Weuse‘should’and‘hadbetter’whengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.YouhadbetterknowalittleaboutDIY.2.Pleaseputinabrighterlightintheroom.Youshouldputinabrighterlightintheroom.Weuse‘should’and‘hadbetter’whengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.Youhadbetterputinabrighterlightintheroom.3.Don’thitthepipe.Youshouldnot/shouldn’thitthepipe.Youhadbetternothitthepipe.Weuse‘should’and‘hadbetter’whengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.4.Don’tpaintthewholeroomblue.Youshouldnot/shouldn’tpaintthewholeroomblue.Youhadbetternotpaintthewholeroomblue.Weuse‘should’and‘hadbetter’whengivingadviceandtellingpeoplewhatisthebestorrightthingtodo.

DIYadviceReadtheadviceandmakesentenceswithshould(not)orhadbetter(not).

buysometolearnmoreaboutit

Youshouldbuysometolearnmoreaboutit.

Youhadbetterbuysometolearnmoreaboutit.

DIYadviceReadtheadviceandmakesentenceswithshould(not)orhadbetter(not).joinaDIYclubtolearnmoreaboutitYoushouldjoinaDIYclubtolearnmoreaboutit.YouhadbetterjoinaDIYclubtolearnmoreaboutit.

DIYadviceReadtheadviceandmakesentenceswithshould(not)orhadbetter(not).beginyourworkwithoutreadingthemYoushouldn’tbeginyourworkwithoutreadingthem.Youhadbetternotbeginyourworkwithoutreadingthem.

DIYadviceReadtheadviceandmakesentenceswithshould(not)orhadbetter(not).playwiththemwhenyoudoDIYjobsYoushouldnotplaywiththemwhenyoudoDIYjobs.YouhadbetternotplaywiththemwhenyoudoDIYjobs.

DIYadviceReadtheadviceandmakesentenceswithshould(not)orhadbetter(not).bepatientYoushouldbepatient.Youhadbetterbepatient.Let’sdoexercise.1.Jim,_____meahand.A.givesB.isgivingC.willgiveD.give2.____careful,Jenny!Thereisatreeinfrontofyou.A.AmB./C.BeD.Was3.Let's____ourtime.A.notwasteB.nowastingC.nottowasteD.nowaste4.—____higher,andyouwillseethehouse.

—OK.A.IfyoustandB.TostandC.WhenyoustandD.StandExercises:5.Please___doit.A.heB.lethimC.letheD.him6._____letanyoneopenthedoor.A.Don'tB.WillC.NotD.No7.—Don’tbelateagain.

—Sorry,______.A.ImayB.ImustC.IwillD.Iwon’t8.—Callmewhenyougethome.

—OK,____.A.ImustB.IcanC.IwillD.ImayExercises:9._____forgettowritetomewhenyou_____gettherenextTuesday.A.Don't;will