Unit4Grammar課件牛津譯林版英語(yǔ)八年級(jí)上冊(cè)

Unit4DoityourselfGrammar類(lèi)型結(jié)構(gòu)例句Do型行為動(dòng)詞原形+其他Standup,please!請(qǐng)起立！Be型Be+形容詞/名詞+其他Becareful,please.

請(qǐng)認(rèn)真一些。Let型Let+賓語(yǔ)+動(dòng)詞原形Letmehelpyou.讓我來(lái)幫助你吧。肯定結(jié)構(gòu)祈使句結(jié)構(gòu)2.

否定的祈使句（1）

Don't

+

動(dòng)詞原形

Don't

stand

up.

別站起來(lái)。

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(duì)于這件事，咱們什么也別說(shuō)。

Let

them

not

play

with

fire.

別讓他們玩火。否定結(jié)構(gòu)結(jié)構(gòu)例句Don’t+動(dòng)詞原形Don’tbelate.別遲到。Don't

stand

up.

別站起來(lái)。Let’s+not+動(dòng)詞原形Let’snotsayanythingaboutit.對(duì)于這件事，咱們什么也不要說(shuō)。Don’tlet+第三人稱(chēng)賓格+動(dòng)詞原形Don’tletthemplaywithfire.別讓他們玩火。祈使句的回答祈使句通常表示將來(lái)要發(fā)生的動(dòng)作，所以回答時(shí)，一般用will或won’t?！狣on’tforgettodoyourhomework.—Iwon’t.—Remembertoturnoffthelights.—Iwill.祈使句的反義疑問(wèn)句Let’s…,shallwe?Letus.…,

willyou?肯定祈使句，will常用/won’tyou?否定祈使句，willyou?Let’sgo,Lettheboygofirst,Don’tsmokehere,shallwe?willyou?willyou?在公共場(chǎng)合的提示語(yǔ)中，常用的結(jié)構(gòu)“No＋名詞/v-ing”，表示“禁止做某事”Nosmoking!Nophotos!Noparking!InstructionsatschoolDon’tstamponthegrass.Don’tdroplitter.Listencarefullyinclass.Beactive!Don’tletyourmindwander.Let’sworkhard.InstructionsinthelibraryBequiet.keepsilence.Nosmoking.Don’teatordrink.InstructionsinthestreetTurnleft.Turnright.Walkonthezebracrossing.Don’tcrossthrougharedlight.Howtomakecards?Millieisteachingherclassmateshowtomakecardstohelpthemrememberthingsbetter.LookatthepicturesandhelpMilliecompletetheinstruction.cutdrawwritegivekeeplooktry_____outpiecesofcardwithapairofscissors._____somewordsorasentenceoneachcard.CutWritecutdrawwritegivekeeplooktry_____apictureaboutthewordsorsentenceontheothersideofthecard._____atthepictureand___torememberwhatisontheotherside.DrawLooktry1.Lucy

herhomeworkbyherself.(do)2.Lucy,

yourhomeworkbyyourself.(do)3.Lucy,______yourhomeworkbyyourselfisimportant.(do)doesdodoing4.________theapplesandeatthem.(pick)5.________theapples

isgreatfun.(pick)6.________everydaymakesyousmart.(read)7.________thebooksandanswerthequestions.(read)PickPickingReadingRead區(qū)分祈使句和動(dòng)名詞作主語(yǔ)GrammarBshouldandhadbetterThestructuresofshould/hadbetter:肯定形式：should+dosth.否定形式：shouldnot(shouldn’t)+dosth.肯定形式：hadbetter(’dbetter)+do

sth.否定形式：hadbetter(’dbetter)

not+do

sth.UsingshouldandhadbetterSuzydoesn’tthinkhercousinknowsmuchaboutDIY.Whatdidsheadvisehimtodo?Whatdoyouthinkshesaidtohimaboutthis?GiveDIYadviceMakesentenceswithshould(not)orhadbetter(not)togiveDIYadvice.1.Willyoupleasereaditagainmoreslowly?(改為祈使句)

_______againmoreslowly,please.

2.Ifyoudon'tlistentome,I'llgo.(改為同義句)

________me,orI'llgo.

3.Theteachersoftentellthestudentsnottobecareless.

(改為祈使句)

________careless,please.

4.PleasesitnexttoNancy.

(改為否定句)

________nexttoNancy.Readit

Listento

Don'tbe

Don'tsitPractice1.你應(yīng)該在南京換火車(chē)。

__________changetrainsatNanjing.2.你最好在下雨前回家。

___________________beforetherainstarts.3