Unit2（知识清单）-英语三年级下册单元速记巧练（译林版三起）

Unit2Cleanourclassroom知识归纳知识归纳语音字母k在单词中可发/k/音:cakecookbookdeskmakelike字母g在单词中可发/g/音:guessbaggoegg必记单词四会our我们的 classroom教室,课堂 close关,关闭window窗,窗户 blackboard黑板 chair椅子sweep打扫,清扫 floor地板,地面 let让us我们 desk课桌,书桌 dirty肮脏的clean洁净的,干净 keep(使)保持,处于常考短语putawaythebooks放好书本 closethewindow关窗户 cleantheblackboard擦黑板cleanthechair擦椅子 sweepthefloor扫地 bigandnew又大又新keepitclean保持它干净整洁 cleanthedesk擦桌子 closethedoor关门adirtydesk一个脏的桌子 cleanourclassroom打扫我们的教室cleanyourdeskandchair清洁你的桌椅 lookoutside看外面goouttoplay出去玩 makeacleaningplan制定一个清洁计划Allright.好的必会句型1.Ourclassroomisbigandnew.我们的教室又大又新。2.Let'skeepitcleanforyouandme.让我们为了你我来保持它的干净和整洁。3.Let'scleanourclassroom.让我们来打扫教室。4.Sweepthefloor,please.请扫地。5.Pleasecleanyourdeskandchair.请清洁你的桌椅。6.Look!Thatdeskisdirty!看！那张桌子很脏！7.Let'scleanourdesksandgoouttoplay.让我们擦擦桌子然后出去玩。8.Putawayyourbooksandoffwego!放好你们的书然后我们走！9.—Icancleantheblackboard.我会擦黑板。—Metoo!我也是!10.Let'ssweepthefloor.让我们来扫地。11.Ourclassroomiscleannow.我们的教室现在很干净。核心语法1.祈使句2.“Let’s......”句型的考点3.情态动词can的用法考点速记考点速记[考点1]祈使句Sam,sweepthefloor,please.Sam,sweepthefloor,please.山姆，请打扫地板。Pleasecleanyourdeskandchair,Max.请清洁你的桌子和椅子，麦克斯。解析：表示请求、命令或劝告的句子叫祈使句。它通常省略主语(you)，根据语气的强弱，句末使用感叹号(!)或句号(.)，朗读时常用降调。例如:Goandwashyourhands.去洗你的手。（表示命令）Bequiet,please.=Pleasebequiet.请安静。（表示请求）Bekindtoanimals.对动物友善。（表示劝告）Keepoffthegrass.勿践踏草坪。（表示禁止）(1)为了使语气委婉，使用祈使句时可加上please,please可位于祈使句的句首(其后通常不用逗号)或句末(其前通常用逗号)。★★★❊易错点提醒：有的祈使句在意思明确的情况下，还可以省略动词。如：Thisway,please.=Gothisway,please.(2)祈使句的回答可用：“Allright./OK./Yes.等”★★★如：—Closethedoor,please.请关上门。—Yes,Mum.好的，妈妈。(3)祈使句的否定句：一般在动词原形前面加Don’t★★★如：Don’tlistentotheparrot,Sam!不要听鹦鹉的，萨姆！(4)常见的祈使句类型：Be型祈使句：Be+(表语)(+其他).如：Becareful.小心。Do型祈使句：实义动词原形+其他.如：Comein,please.请进。Let型祈使句：Let+宾语+动词原形(+其他).如：Letmehavealook.让我看一看。提分练一、单项选择。()1.Lucy,________openthedoor.A.not B.please C.no()2.It’scold.________thewindow,please.A.Don’topen B.Open C.Don’tclose()3.Don’t________intheclassroom.A.run B.running C.torun()4.Comeand________myfamily.A.look B.meet C.have()5.Let’s________andsee.A.togo B.go C.going提分练二、按要求完成句子。1.Putawaythebooks,SuHai.(改成否定句)________________awaythebooks,SuHai.2.Closethedoor,WangBing.(改成否定句)________________thedoor,WangBing.3.the,floor,sweep,please(,.)(连词成句)________________________________________________4.clean,let's,classroom,our(.)(连词成句)________________________________________________5.put,books,these,your,in,schoolbag(.)(连词成句)________________________________________________[考点2]“Let’s......”句型的考点LetLet’scleanourclassroom.让我们打扫教室。Let’sputawaythebooks,YangLing.让我们把书收起来吧，杨玲。解析：“Let’s......”是建议对方一起做某事的祈使句句型，意为“让我们......吧”let是动词原形，后面接人称代词的宾格形式（me/you/him/her/us/them/it）★★★Let’s相当于Letus，后面接动词原形，其完整结构为“Letsb.dosth.”★★★其答句为“OK./Allright./Great./Goodidea.”等。★★★例如：—It’stimeforPE.Let’splayfootball.—Allright.好的。—Let’smakeafruitsalad.—Goodidea.好主意。提分练一、用所给单词的适当形式填空。1.Let________(I)takealook.2.Let's________(sweep)thefloor.3.Let________(we)________(clean)ourclassroom.提分练二、单项选择。()1.—Let’scleantheclassroom.—________.A.Hownice! B.Goodidea! C.Welldone.()2.Let________putawaymybooks.A.me B.I C.my()3.—Let’s________theclassroomcleanforyouandme.—Allright.A.tokeep B.keep C.sweep()4.—Let’s________acleaningplan.—Goodidea!A.clean B.make C.keep提分练三、根据所设情景，选择正确答案。()1.你建议同学和你一起坐飞机模型，他可以回答：A.Goodidea. B.Thankyou. C.It’snice.()2.放学了，好朋友邀请你一起回家，他会说：A.Doyougohomewithyourfriend?B.Thankyou. C.Let’sgohome.()3.你建议同学和你一起去图书馆，可以说：A.Don’tgotothelibrary. B.Let’sgotothelibrary. C.Let’sgotothepark.[考点3]情态动词can的用法——Icancleantheblackboard.我可以擦黑板。—Metoo.我也是。can是情态动词，意为“能，会”，表示有能力或者会做某件事情，后面接动词的原形，不随主语人称或数的变化而变化。(1)肯定句结构：主语+can+动词原形(+其他).如:Shecanreadbooks.她会看书。Hecanplayfootball.他会踢足球。(2)否定句结构:主语+can't(cannot)+动词原形(+其他).如：Shecan'ttakepictures.她不会拍照。Ican'tsing.我不会唱歌。(3)在一般疑问句中，can的位置要放在句首肯定回答：Yes,主语+can.否定回答：No,主语+can’t.例如：—Canyoumakeaposter?你能做一张海报吗?—Yes,Ican.或No,Ican’t.(3)特殊疑问句以及回答：—What+can+主语+动词原形(+其他)?—主语+can+动词原形+其他.例如：—Whatcanthechildrendofortheirfamily?孩子们能为他们的家人做什么?—Theycansinganddancefortheirfamily.他们能为他们的家人们唱歌跳舞。提分练一、看图并根据上下文填空。(每空一词)1.—________canyoudo? —Ican________apicture.2.—________you________asong? —Yes,Ican.3.—Ican________________you,Grandma. —Great!4.Wecanreada________inthelibrary.Butwe________shout(大喊).提分练二、单项选择。()1.Ican________pictures.A.take B.takes C.taking()2.—Icandraw.—________A.Icandrawtoo. B.Thankyou! C.Ican'tsing.()3.—Whatcanyoudoforyourfamily?—________A.Iwantatoy. B.Icansing. C.Icansinging.()4.You________write(写).A.are B.is C.can't提分练三、按要求完成句子。1.Mydogcanrun.Mydogcanjump.(合并为一句)Mydogcan________and________.2.Theycancleanthedesksandchairs.(改为一般疑问句)________they________thedesksandchairs?3.Icancleantheblackboard.(改为否定句)I________theblackboard.参考答案[考点1]祈使句一、1.B2.A3.A4.B5.B二、1.Don’tput2.Don’tclose3.Pleasesweepthefloor.