Unit 2 HomeSweetHomey 语法总结及配套练习（表格式含答案）2025-2026学年人教版（2024）英语八年级上册

enseUnit2Home,SweetHome情态动词can/could用法总结用法说明例句表示能力can表示现在的能力

could表示过去的能力•Icancookdinnerformyfamily.

•WhenIwasfive,Icouldn'twashdishes.表示请求can用于非正式场合

could更礼貌委婉•CanIwatchTVafterdinner?

•Couldyoupleasehelpmecleanmyroom?表示许可can给予许可

could请求许可•Youcanplaygamesafterhomework.

•CouldIinvitefriendstoourhouse?表示可能性can表示现实可能性

could表示较小可能性•Wecandecoratethelivingroomtogether.

•Itcouldraintomorrow,sotakeanumbrella.表示建议could用于提出建议

(比can更委婉)•Youcouldorganizeyourbookshelf.

•Wecouldhaveafamilymovienight.特殊用法与注意事项句型否定形式can→can't/cannot;could→couldn't/couldnot疑问形式Can/Could+主语+动词原形...?回答方式肯定回答：Yes,...can/could;否定回答：No,...can't/couldn't时态区别could可表示过去能力，但不用于表示过去具体某次动作的成功完成Icouldfinishmyhomeworkyesterday.→应改为：Iwasabletofinish...注意事项感官动词搭配：can/could与see/hear/smell等连用表示感知

•Icanhearmymothercookinginthekitchen.情态动词can/could配套练习班级：___________姓名：___________学号：___________一、选择题（40分）1.—______youhelpmewiththehousework?

—OfcourseIcan.A.Can

B.Could

C.Will

D.Should2.WhenIwasyoung,I______playthepiano,butnowIcan't.A.can

B.could

C.may

D.might3.—______Iborrowyourumbrella?It'sraining.

—Sure,hereyouare.A.Can

B.Must

C.Should

D.Would4.You______askyourbrothertocleanhisroom.It'stoomessy.A.can

B.could

C.should

D.would5.Mysister______driveacarbecausesheisonly15yearsold.A.can

B.can't

C.could

D.couldn't6.—______youpassmethesalt,please?

—Certainly.A.Can

B.Could

C.May

D.Must7.Shesaidthatshe______cometothefamilydinner,butshewasn'tsure.A.can

B.could

C.may

D.might8.Mygrandmother______cookdeliciousmealswhenshewasyoung.A.can

B.could

C.may

D.might二、用can,could,can't,couldn't的适当形式填空（20分）1.I______swimwhenIwasfive,butnowIswimverywell.2.______youpleaseopenthewindow?It'stoohot.3.Mylittlebrother______tiehisshoesbecauseheisonlyfour.4.He______speakthreelanguageswhenhewasten.5.Thebaby______walkyet.Sheisonly10monthsold.三、句型变换（40分）1.Icanplaythepiano.(改为一般疑问句)

______you______thepiano?2.Couldyouhelpme?(改为同义句，用can)

______you______me?3.Shecouldswimwhenshewasfive.(改为否定句)

She____________whenshewasfive.4.Wecouldnotfindthewayhome.(改为同义句)

We____________tofindthewayhome.5.Theycancleantheroom.(对划线部分提问)[划线部分：cleantheroom]

____________they______?情态动词can/could练习答案选择题1.A.Can2.B.could3.A.Can4.B.could5.B.can't6.B.Could7.B.could8.B.could二、适当形式