Unit4Grammar課件牛津譯林版英語八年級上冊

Unit4DoityourselfGrammar類型結構例句Do型行為動詞原形+其他Standup,please!請起立！Be型Be+形容詞/名詞+其他Becareful,please.

請認真一些。Let型Let+賓語+動詞原形Letmehelpyou.讓我來幫助你吧?？隙ńY構祈使句結構2.

否定的祈使句（1）

Don't

+

動詞原形

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。否定結構結構例句Don’t+動詞原形Don’tbelate.別遲到。Don't

stand

up.

別站起來。Let’s+not+動詞原形Let’snotsayanythingaboutit.對于這件事，咱們什么也不要說。Don’tlet+第三人稱賓格+動詞原形Don’tletthemplaywithfire.別讓他們玩火。祈使句的回答祈使句通常表示將來要發(fā)生的動作，所以回答時，一般用will或won’t?！狣on’tforgettodoyourhomework.—Iwon’t.—Remembertoturnoffthelights.—Iwill.祈使句的反義疑問句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?在公共場合的提示語中，常用的結構“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)分祈使句和動名詞作主語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.你應該在南京換火車。

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

___________________beforetherainstarts.3