初中英语牛津译林版八年级上册Unit4Doityourself 全国优质课

内容：Unit4Grammar课型：新授学习目标学会运用祈使句表达指令。学会使用should和hadbetter来提建议。重点祈使句的用法难点祈使句的用法课前预习：（一）在书上找出下列短语：1.修理架子2.在每张卡片上3.在…的另一边4.给出建议5.一把剪刀6.最好不做某事7.放弃做某事8.参加“自己动手”俱乐部（二）试着填出下列词的形式：1.（write）somewordsoneachcard.2.(nottouch)thewetpaint.canbedangerous,youshould(be)patient.’dbetter(notbe)lateforschool.youmake(sentence)with“should”and“hadbetter”?二、教学过程【语法讲解】（一）祈使句：定义：祈使句是英语的基本句型之一，表达说话人对对方的叮嘱、劝告、请求或命令等，往往有表示请求、命令、希望、禁止、劝告等意思。祈使句一般没有主语，实际上是省略了主语“You”。句末用感叹号或句号，用降调朗读。肯定结构都以动词原形开头。例如：（catch）theball！接球！（come）andmeetmyfamily．Kate,you(clean)theclassroomtoday.表现形式：1.祈使句的肯定式有三种形式，即(1)Do型（以行为动词原形开头），例如：Sitdown坐下！Standup起立！(2)Be型（以be开头），例如：Bequiet安静！(3)Let型（以let开头），例如：Letmehelpyou.让我来帮助你。2.祈使句的否定结构是以“Don’t＋动词原形”开头。1）Do和Be直接在前面加Don’t例如：(notgo)there,please．请别去那儿。(notbe)late．不要迟到。（notdo）thatagain.不要在做那件事了。2）Let’s型祈使句，其否定式有两种：Don’tletthewaterrunintotheroom．不要让水流进屋里。=thewaterintotheroom．。3）有些用No开头，用来表示禁止祈使句。Noparking禁止停车Nofishing禁止钓鱼3.注意：表示请求、劝告的祈使句还常常在句前或句末加上Please,构成句式：Please．．．或．．．please．以使语气更加缓和或客气。例如：Pleasestandup。=，．请站起来。(二)用should和hadbetter提建议：hadbetter语气较should强。1.had

better

是固定词组，意思是“应该；最好”，后接不带to的不定式，其用法相当于情态动词，动词had没有人称或数的变化。had

better

常用来提出建议，语气较强，往往含有强迫或命令的口气，故常用于长辈对晚辈、上级对下级或平辈之间。该短语指的是现在或将来的情况，而不是指过去。hadbetter的简略式为：'dbetter。如：

1)

therebybus.你最好是坐公共汽车去那里。

2)

Wehadbetter(start)atonce.我们最好立刻出发。注意：hadbetter的否定是hadbetternot；疑问式是将had放在主语之前。如：

1)

We'dbetter(nottell)himthenews.我们最好不要告诉他这个消息。

2）Wehadbetternotgotothestationtomeethim(改成一般疑问句)

younotgotothestationtomeethim?

2.情态动词should常用来表示劝告、建议或义务，意思是“应该”，可用于各种人称，语气委婉，后接不带to的动词不定式。例如：1）Youshouldn't(come)tosuchadecisionhastily.你不应该匆忙作出这样的决定。2）Thepartygreatfun.那个集会一定很有意思。当堂检测：mustcomehere.（改成祈使句）.mustn’tdothatagain.(同上)dothatagain.youuseyourhead,youwillfindtheway.(同上),youwillfindtheway.’dbetterpracticethepianoeveryday.(改成一般疑问句)youpracticethepianoeveryday?’dbetterwriteasentenceonthispage.(改成否定句)writeasentenceonthispage.三、课后巩固（一）单项选择()1.—Ihavetogettotheairportat10:00butit’s9:20a.m.now.—!Icansendyoutherebycar.’sadealup’tworryyourbest()’tdrawonthewall.’dlike,Ido.’swrong,Iwon’tdoagain.()careful!Thewateristoohot.You’dbetteritrightnow.notdrinktodrinkdrinkdrinking.()!Thereisabigsnakenearthehouse.willgoawaylater.’t’tbe（二）完形填空MrYounghasabigshopinthecenterofthecity.Hetellsallhisemployees(雇员)tobe(1)________tothebuyersandhegetsalotof(2)_______.

Onedayanoldwomanwenttotheshopto(3)_________asilkblouse.Whenshecameoutoftheshopwiththeblouse,she(4)______herwalletinit.Agirlpickeditupand(5)________therewerenearlyfivehundreddollarsinit.Shelookedaroundand(6)________sawit.Sheputitintoher(7)________quickly.Soontheoldwomancamebacktolookforit,ofcourseshe(8)______.ThateveningMrYoungwastoldaboutit.Hewasvery(9)_______andsentthegirlaway.Thenhedecidedtoemployanhonestmantotakeher(10)_______.Severalyoungmencame,but(11)_______ofthemcouldsatisfyhim.

Thismorningayoungmancametohis(12)_______.Heasked,"Doyousmoke,sir?"

"No,sir,"answeredtheyoungman.

"Doyou(13)_______?"

"No,sir."

MyYoungaskedhimtheotherquestions,andtheyoungman's(14)_______satisfiedhim.Beforeheemployedhim,heaskedhimthelastquestion,"Youhave(15)_______shortcoming,doyou?"

"No,Idon't,sir."saidtheyoungman."Ionlyliketellinglies."

()1.A.strictB.friendlyC.strangeD.terrible

()2.A.businessB.surpriseC.moneyD.hope

()3.A.buyB.borrowC.lookforD.lend

()4.A.threwB.putC.placedD.left

()5.A.foundB.knewC.understoodD.wanted

()6.A.somebodyB.anybodyC.nobodyD.everybody

()7.A.handB.pocketC.bottleD.glass

()8.A.wonB.lostC.forgotD.failed

()9.A.sadB.angryC.happyD.worried

().placeB.seatC.tableD.chair

().bothB.allC.neitherD.none

().houseB.carC.officeD.pigsty

().dressB.drinkC.eatD.sleep

().answersB.clothesC.knowledgeD.face

().muchB.someC.anyD.no四、课后反思五、拓展题：短文填空Mr.Brownandhiswifehadasmallbarneararailwaystation.Thebardidn'tcloseu___1___midnightbecausepeoplecametodrinkwhiletheywerew___2___fortrains.Sothebusinesswasgood.Attwoo'clockonemorning,amanwass___3___sittingatthetableinthebar.Hewasa___4___.Mr.Brown'syoungwifewantedtogotob___5___.Shelookedi___6____thebarseveraltimes,butthemankeptsleeping.Thenatlastshewenttoherhusbandandsaidtohim,"Youhavetriedtowakeupthatmanseveraltimes,andheisn'tdrinkinga__7____.Whyhaven'tyousenthimaway?It'stool____8___."“Oh,