Unit2语法专项提建议情态动词与反身代词课件人教版八年级英语下册

教学课件新人教版八年级下册

Unit2语法专项——提建议情态动词与反身代词

全解精讲+分层练习在日常交流中，我们经常需要给他人提建议、劝诫他人比如：感冒了该怎么做？遇到困难可以怎么办？本节课核心：掌握should和could的用法，精准表达建议关键特点：两者后均接动词原形，无人称、数的变化适用场景：健康、学习、日常行为等高频场景Part1提建议的情态动词（should,could）核心含义：应该、应当（表合理建议、责任或义务）语气特点：直接、明确，语气较强，让人容易接受肯定句式：主语+should+动词原形+其他例句1：Youshouldgotobedearlytokeephealthy.

（你应该早睡来保持健康。）否定句式：主语+shouldn’t（shouldnot）+动词原形+其他例句2：Youshouldn’teattoomuchjunkfood.(你不应该吃太多垃圾食品。)should的核心用法核心含义：可以、不妨（表提供可选建议）语气特点：委婉、温和，比should更客气，不强迫肯定句式：主语+could+动词原形+其他例句1：Youcouldaskyourparentsforhelp.（你可以找父母帮忙。）例句2：Shecouldreadsomebookstorelax.（她可以看点书放松一下。）注意：could表建议时，否定式couldn’t极少用（多表能力不足）could的核心用法should与could对比（必记）情态动词核心含义语气核心用途should应该、应当直接、明确提合理、必要的建议shouldn’t不应该直接提醒劝诫不要做某事could可以、不妨委婉、客气提供可选、温和的建议小贴士：想礼貌提建议用could，想强调责任用should1.should疑问句：Should+主语+动词原形+其他？用途：询问他人是否“应该”做某事，回答用Yes,...should./No,...shouldn’t.例句：—ShouldItakethismedicine?—Yes,youshould.2.could疑问句：Could+主语+动词原形+其他？用途：委婉请求建议或帮助，语气比should更礼貌例句：—Couldyougivemesomeadvice?—Sure,youcouldtrythisway.疑问句用法（提建议/请求）❌错误1：Youshouldtodrinkmorewater.（多了to）✅正确：Youshoulddrinkmorewater.（should后接动词原形）❌错误2：Hecouldn’teatspicyfood.（表建议，误用couldn’t）✅正确：Heshouldn’teatspicyfood.（表劝诫用shouldn’t）❌错误3：Shecouldsaskherteacher.（could无第三人称变化）✅正确：Shecouldaskherteacher.易错点辨析（避坑指南）基础小练习（情态动词）用should/could/shouldn’t填空（每空一词）1.You__________finishyourhomeworkbeforewatchingTV.2.—Ihaveafever.

—You__________seeadoctor.3.He__________playcomputergamestoolate.It’sbadforeyes.4.—Idon’tknowhowtolearnEnglish.

—You__________readmore.shouldshouldshouldn’tshould/could核心定义：指代句子的主语，强调“某人自己”关键原则：必须与主语的人称、单复数完全一致，不可混用比如：我自己、你自己、他自己、我们自己...常见标志：句子主语和宾语是同一个人/物时，常用反身代词用途：作宾语、同位语，或用于固定搭配（高频考点）Part2反身代词反身代词完整形式（必考默写）人称单数形式（含义）复数形式（含义）第一人称myself（我自己）ourselves（我们自己）第二人称yourself（你自己）yourselves（你们自己）第三人称himself（他自己）themselves（他们自己）第三人称herself（她自己）themselves（她们自己）第三人称itself（它自己）themselves（它们自己）适用场景：宾语与主语为同一人/物，放在及物动词后高频标志词：hurt（伤害）、dress（穿衣服）、teach（教）高频标志词：enjoy（享受）、help（帮助）、wash（洗）例句1：Hehurthimselfwhenhefelloffthebike.（他摔伤了自己。）例句2：Sheteachesherselfmatheveryevening.（她每晚自学数学。）关键：主语是he，宾语就用himself，前后保持一致核心用法1：作宾语适用场景：置于主语后，加强语气，译为“亲自、本人”特点：可省略，省略后不影响句子原意作用：强调动作是主语亲自完成，不是别人代替例句1：Mymotherherselfcookeddinnerforus.（我妈妈亲自给我们做饭。）例句2：Youyourselfmustrememberthisrule.（你本人必须记住这条规则。）省略版：Mymothercookeddinnerforus.（句意不变）核心用法2：作同位语牢记以下搭配，做题直接套用（必考）1.byoneself=alone（独自、靠自己）例句：Ifinishedtheworkbymyself.（我独自完成了工作。）2.enjoyoneself=haveagoodtime（玩得开心）例句：Theyenjoyedthemselvesatthepicnic.（他们野餐玩得很开心。）3.takecareofoneself（照顾自己）例句：Youshouldlearntotakecareofyourself.（你应该学会照顾自己。）固定搭配（高频考点1）继续牢记，补充完整高频搭配4.helponeself(tosth.)（随便吃/用某物）例句：Helpyourselvestosomecakes,kids.（孩子们，随便吃点蛋糕。）5.loseoneselfin（沉浸于、专心于）例句：Shelostherselfinthebeautifulmusic.（她沉浸在优美的音乐中。）小贴士：oneself要根据主语，换成对应的反身代词固定搭配（高频考点2）❌错误1：Myselfwenttoschool.（反身代词不能单独作主语）✅正确：Iwenttoschoolbymyself.（用主格I作主语，反身代词作状语）❌错误2：Shehurther.（主语she，宾语需用反身代词）✅正确：Shehurtherself.❌错误3：Weenjoyedus.（enjoy后接反身代词，不是宾格）✅正确：Weenjoyedourselves.易错点辨析（避坑指南）基础小练习（反身代词）用括号内所给词的适当形式填空1.Thelittleboycandress__________(he)now.2.Weshouldtakecareof__________(we)whenourparentsareaway.3.Shefelldownandhurt__________(she)badly.4.Thecatwashed__________(it)aftereatingfish.5.Theyenjoyed__________(they)atthebirthdayparty.himselfourselvesherselfitselfthemselvesPart3基础巩固习题题型一：用should/could/shouldn’t填空（1-5题）1.—Ihaveatoothache.—You__________seeadentistatonce.2.You__________stayuplate.It’sbadforyourhealth.3.He__________trydrinkingwarmmilkbeforegoingtobed.4.—I’mstressedout.—You__________listentosomelightmusic.5.We__________helpourparentsdohouseworkonweekends.shouldshouldn’tcouldshould/couldshould题型一：用should/could/shouldn’t填空（6-10题）6.You__________eattoomuchsweetfood.It’sbadforteeth.7.She__________askherteacherforhelpwithherEnglish.8.—Mylegsaresore.—You__________takearestanddon’trun.9.They__________playfootballintheclassroom.It’sdangerous.10.I__________readmoreEnglishbookstoimprovemyreading.shouldn’tcould/shouldshouldshouldn’tshould/could题型二：用反身代词适当形式填空（11-18题）11.Tomoftenteaches__________(he)Chineseafterschool.12.MysisterandIenjoyed__________(we)attheparkyesterday.13.Canyoulookafter__________(you)well,Linda?14.Thestudentsfinishedtheirhomeworkby__________(they).15.Shehurt__________(she)whenshewascooking.16.Thedogcleaned__________(it)withitstongue.17.You__________(you)shouldmakeaplanforyourstudy.18.Wemustprotect__________(we)fromdanger.himselfourselvesyourselfthemselvesherselfitselfyourselfourselvesPart4能力提升习题题型三：单项选择1.—Ihaveacold.—You__________eatcoldfood.A.shouldB.shouldn’tC.could2.Thelittlegirlcan’tdress__________.Sheneedshermom’shelp.A.herB.herselfC.she3.—Idon’tknowhowtosolvethisproblem.—You__________askyourdad.A.couldB.shouldn’tC.mustn’t4.Weenjoyed__________atthezoolastSunday.A.usB.ourC.ourselves5.You__________gotobedearlyifyoufeeltired.A.shouldB.couldC.AandBBBACC题型三：单项选择6.Hefelloffthechairandhurt__________badly.A.heB.himselfC.his7.—ShouldItakethismedicine?—__________.It’sgoodforyourcough.A.Yes,youshouldB.No,youshouldn’tC.Yes,youcould8.Theyfinishedtheprojectby__________withoutanyhelp.A.themB.themselvesC.their9.You__________playinthestreet.It’sverydangerous.A.shouldB.couldC.shouldn’t

BABC10.—Couldyougivemesomeadvice?—Sure,you__________practicemore.A.shouldB.couldC.can11.Shelost__________inreadinganddidn’thearthebell.A.herB.herselfC.she12.We__________takemoreexercisetokeepfit.A.shouldB.shouldn’tC.couldBBAPart5拓展挑战习题题型四：句型转换1.Youshoulddrinkmorehotwater.（改为否定句）You____________________morehotwater.2.Hehurthimselfwhenheplayedbasketball.（对划线部分提问）____________________he__________himself?3.Youcouldgototheparktorelax.（改为一般疑问句）____________________gototheparktorelax?shouldn’tdrinkWhendidhurtCouldyou题型四：句型转换4.Weshouldlearntotakecareofourselves.（对划线部分提问）____________________youlearntodo?5.Theboycanlookafterhimselfwell.（改为同义句）Theboycan____________________himself.6.Youshouldn’tplaycomputergamestoolong.（改为肯定句）You____________________playcomputergamesforashorttime.7.Sheenjoyedherselfattheparty.（改为一般疑问句）____________________she__________herselfattheparty?Whatshouldtakegoodcareofshould/couldDidenjoy阅读短文，用所给词适当形式或should/could填空Whenyoufeeltired,you1.__________(should)havearest.You2.__________（could）drinkacupofwarmtea.You3.__________(shouldn’t)workorstudytoohard.Whenyouarealoneathome,youshouldtakecareof4.__________（you）.You5.__________