仁爱英语七年级下unit5topic2课本知识点同步讲解与练习

同学们，欢迎来到Unit5Topic2的学习。在这个单元，我们将围绕“日常生活中的活动”这一主题，重点学习如何用英语描述正在发生的事情。这不仅是语言知识的积累，更是为了让我们能够在实际情境中流畅地交流。下面，我们就一同梳理本单元的核心知识点，并通过练习加以巩固。一、核心语法：现在进行时(PresentContinuousTense)本单元的重中之重是现在进行时。它用来表示此时此刻正在进行或发生的动作。1.构成：主语+be动词(am/is/are)+动词的现在分词(V-ing)+其他。*be动词的选择：*I→am*He/She/It→is*You/We/They→are*动词现在分词的构成规则：*一般情况：直接在动词后加-ing。例如：play→playing,read→reading,clean→cleaning。*以不发音的字母e结尾的动词：去e加-ing。例如：write→writing,dance→dancing,take→taking。*以重读闭音节结尾，且末尾只有一个辅音字母的动词：双写这个辅音字母，再加-ing。例如：run→running,swim→swimming,shop→shopping,sit→sitting。*特殊变化：少数动词有特殊的现在分词形式，需要个别记忆，如：lie→lying。2.时间状语：常与现在进行时连用的时间状语有：now(现在),look(看),listen(听),atthemoment(此刻)等。例如：*Look!Theboyisrunning.(看！那个男孩正在跑步。)*Listen!Sheissinging.(听！她正在唱歌。)*Theyareplayingbasketballnow.(他们现在正在打篮球。)3.句式转换：*肯定句：主语+am/is/are+V-ing+...例如：Iamdoingmyhomework.(我正在做我的家庭作业。)*否定句：主语+am/is/are+not+V-ing+...例如：Sheisnot(isn't)watchingTV.(她没在看电视。)*一般疑问句：Am/Is/Are+主语+V-ing+...?肯定回答：Yes,主语+am/is/are.否定回答：No,主语+amnot/isn't/aren't.例如：Areyoureadingabook?(你正在看书吗？)Yes,Iam./No,I'mnot.(是的，我在看。/不，我没在看。)*特殊疑问句：特殊疑问词+am/is/are+主语+V-ing+...?常用的特殊疑问词有：what(什么),who(谁),where(哪里),how(怎样)等。例如：Whatishedoing?(他正在做什么？)Heisplayingfootball.(他正在踢足球。)二、重点词汇与短语本单元围绕“日常活动”展开，我们会学到许多相关的动词和动词短语：*cleantheroom(打扫房间)*sweepthefloor(扫地)*washclothes(洗衣服)*cookthemeal(做饭)*dohomework(做家庭作业)*watchTV(看电视)*readabook/newspaper(看书/报纸)*writealetter(写信)*talkonthephone(打电话)*drawapicture(画画)*listentomusic(听音乐)*playbasketball/football/ping-pong(打篮球/踢足球/打乒乓球)*dance(跳舞)*sing(唱歌)*run(跑步)*swim(游泳)*shop(购物)*lookat(看……)用法提示：这些动词短语在使用时，要注意与be动词搭配构成现在进行时。例如：Mymotheriscookingthemealinthekitchen.(我妈妈正在厨房做饭。)三、核心句型1.询问某人正在做什么：*What+be+主语+doing?*—Whatareyoudoing?(你正在做什么？)*—Iamreading.(我正在读书。)*—Whatishe/she/itdoing?(他/她/它正在做什么？)*—He/She/Itisplayingbasketball.(他/她/它正在打篮球。)*—Whataretheydoing?(他们正在做什么？)*—TheyarewatchingTV.(他们正在看电视。)2.描述某人正在做某事：*主语+be+V-ing+(地点/方式等).*Sheissingingintheclassroom.(她正在教室里唱歌。)*Theyareplayinggameshappily.(他们正在开心地玩游戏。)3.确认某人是否正在做某事：*Be+主语+V-ing+...?*—IsTomcleaninghisroom?(汤姆正在打扫他的房间吗？)*—Yes,heis./No,heisn't.(是的，他在打扫。/不，他没在打扫。)四、同步练习练习一：词汇运用(根据汉语提示完成句子)1.Myfatheris____________(看报纸)now.2.Listen!Thebirdsare____________(唱歌)inthetree.3.Theyare____________(打篮球)ontheplayground.4.Whatareyou____________(做)atthemoment?5.Mysisteris____________(写)alettertoherfriend.练习二：用所给动词的适当形式填空1.Look!Thegirl____________(dance)overthere.2.We____________(notwatch)TVnow.We____________(do)ourhomework.3.—____________Tom____________(swim)intheriver?—No,heisn't.He____________(run).4.Sheoften____________(read)booksintheevening,butnowshe____________(listen)tomusic.5.What____________yourparents____________(do)now?练习三：句型转换(按要求改写句子)1.Iamcleaningmyroom.(改为否定句)___________________________________________________________________________________________________________________________3.Sheisreadingastorybook.(对划线部分提问)_________________________________________4.Ishedoinghishomework?(作否定回答)_________________________________________5.Thestudentsarehavingaclass.(对划线部分提问)_________________________________________练习四：情景交际(从方框中选择合适的选项补全对话)A.Whatishedoing?B.No,sheisn't.Sheislisteningtomusic.C.Heisinthepark.D.Sheisinherroom.E.Yes,Iam.Tom:Hello,Mary!Areyoureadingabook?Mary:1.____________I'mdoingmyhomework.Tom:Whereisyourbrother,Jim?Mary:2.____________Tom:3.____________Mary:Heisplayingfootballwithhisfriends.Tom:Whataboutyoursister,Lucy?IsshewatchingTV?Mary:4.____________Tom:Whereisshe?Mary:5.____________练习五：看图写话(根据图片内容，用现在进行时写三句话)*(此处假设有一张图片：一个男孩在公园跑步，一个女孩在树下画画，一位老人在长椅上看报纸)*1._________________________________________2._________________________________________3._________________________________________五、参考答案练习一：1.readinganewspaper2.singing3.playingbasketball4.doing5.writing练习二：1.isdancing2.aren'twatching;aredoing3.Is;swimming;isrunning4.reads;islistening5.are;doing练习三：1.Iamnotcleaningmyroom.3.Whatisshereading?(假设划线部分是"astorybook")4.No,heisn't.5.Whatarethestudentsdoing?(假设划线部分是"havingaclass")练习四：1.E2.C3.A4.B5.D练习五：(示例)1.Theboyisr