Unit3Grammar课件级英语下册2

The

presentcontinuoustenseUnit

3

Treesandus

Grammar课堂教学目的课堂重难点通过学习语法板块语篇，引导学生掌握现在进行时的语法知识点，并学会现在进行时谈论一些活动。文化意识课堂重难点思维品质课堂教学目的理解和归纳现在进行时相关语法知识和正确用法，能够用现在进行时描述正在进行或发生的事情。了解某些表示感官直觉、状态或心理感觉的动词不能使用现在进行时态。认识到树木的重要性，学会保护树木资源，培养保护树木的责任意识。探索和总结本单元目标语言，内化所学的内容,更好地理解目标语言。&LeadinTodayisTrees-plantingDay.Look!Whatarethestudentsdoingnow?Completethefoursentencesbelow.They____________(dig)ahole.arediggingLeadinLookandsay.Usingthestructure“be+Ving”They____________(put)thelittletreeintothehole.areputtingLeadinLookandsay.Usingthestructure“be+Ving”Theboy____________(put)thesoilbacktotheholeandthegirl__________(take)somewater.is

puttingistakingLookandsay.Usingthestructure“be+Ving”LeadinThey_____________(water)thetree.arewateringLeadinLookandsay.Usingthestructure“be+Ving”They____________(cheer)fortheirplanting.arecheeringLeadinLookandsay.Usingthestructure“be+Ving”arediggingareputtingisputtingistakingarewatering arecheeringWhatarethese?areTheyarethepresentcontinuoustense.LeadinPresentationThepresentcontinuous

现在进行时Weusethe

presentcontinuoustoshowthatsomethingishappeningnow.现在进行时用于表达某事正在发生。LiNaistalkingtoWangJieonthephone.Readthedialogueandpayattentiontothewordsinbold.PresentationWhat’sthestructureofthepresentcontinuoustense?Whatareyoudoingnow?I’mstayingwithmygrandmotherthisweek.I’mwatchingaTVprogrammeabouttrees.SuSuandIareworkingonourgroupproject..beamisare+v.ingThink现在进行时的结构be动词的用法口诀be动词，真伟大，生出am,is,are。我(I)是am，你(you)是areis连着他(he),她(she),它(it)单数is，复数are。PresentationPresentation主要动词现在分词例子大多数动词以不发音-e结尾的动词

特殊：以发音-e结尾的动词以-ie结尾的动词一些以一个元音字母+一个辅音字母结尾的动词+ingfeel→去e+ing+ingwrite→see→去ie+ying双写这个辅音字母+ingdie→run→现在分词的构成方式Presentationfeelingwritingseeingdyingrunningwait________drive________sit________lie________waitingdrivingsittinglyingfight________save________run________tie________fightingsavingrunningtying一般情况直接加以e结尾去e加辅元辅双写加ie结尾改y加PresentationIamreadingabookinthelibrary.⭐肯定句:主语+am/is/are+V-ing+其它.Iamnotreadingabookinthelibrary.⭐否定句：直接在am/is/are后加not.现在进行时的句式Presentation一般疑问句及回答:—Areyoureadingabookinthelibrary?—Yes,Iam./No,I’mnot.直接把am/is/are提句首,若原句有第一人称，把第一人称变成第二人称。肯定回答:Yes,主语+be(be是要变化的，即am/is/are).

否定回答:No,主语+be+not.特殊疑问句：格式为：What+am/is/are+主语+doing?Presentation时间状语与现在进行时连用的时间状语：atpresent 目前；现在

atthemoment 此刻；现在rightnow 此刻；现在；now 现在

提示语: look!/listen!PresentationWedonotusuallyusetheverbsintheboxbelowinthepresentcontinuoustense.

Instead,

weusetheminthesimplepresenttense.有些动词通常不可用于现在进行时态,而用一般现在时。

believehear

likeprefersmell

understandhate

knowlovesee

realize

taste

want✔Iknowmydeskmate

well.✘Iamknowingmydeskmate

well.✔Myyoungersisterlikeseatingapples.✘Myyoungersisterislikingeatingapples.SpecialrulesPresentation现在进行时

VS

一般现在时现在进行时：强调此刻或现阶段正在进行的动作，一般现在时：强调动作的经常和反复，或属于主语本身具有的特征，实际上这类动作没有时间性。eg.

: Jenniferisreadingabooknow.

Jenniferreadsbookseverynight.Presentation瞬间动词的用法一般说来，瞬间动词不能用现在进行时表达，但是像come，go，leave,arrive，start，fly

等瞬间动词用现在进行时表达时常与表示将来时的时间状语连用，表示将要发生的动作。例如:TheyareleavingforAustraliatomorrow.

Presentationareeatingamfeeling/feelismovingiswaitingPracticeChenLiismakingavideoabouthowtreesprotectthemselvesfromenemies.Helphercompletethevideoscriptwiththecorrectformoftheverbsinbrackets.iseatingisisenjoyinggivingPracticeChangetheverbsinto–ingform.Exercisethink __________tell __________sit __________come __________smile __________lie __________sing __________fight __________change __________make __________thinkingtellingsittingcomingsmilinglyingsingingfightingchangingmakingExercise1.Sheiswatchingaballet.(变否定句)2.

We’rewaitingforourteacher.(变一般疑问句)3.IsTonycallingafriend?(作肯定问答)4.Theyarelyinginthesun.(就划线部分提问)Sheisn’t

watchingaballet.Are

you

waitingforyourteacher?Yes,heis.What

aretheydoing?

句型转换Tip:一般疑问句中，第一人称要改为第二人称。ExercisePleasebequiet.Thekids____________(sleep)now.Look,theboy___________(run)fast.3.—________thestudents_________(read)anarticleinEnglish?—Yes,theyare.4.Tom____________(notstudy)English.HeisstudyingChinese.5.Themonkey____________(noteat)bananasnow.6.—Where____________they___________(stand)?—Theyarestandingoverthere.7.—WhatisMeimeidoingnow?—She______________(watch)TVwithherparents.aresleepingisrunningreadingisn’tstudyingisn’teatingarestandingiswatchingAreCompletethesentenceswiththecorrectformofthewordsinbrackets.ExerciseProductionLookatthepicturesanddescribewhatpeoplearedoing.Possibleanswers:Theyareplantingatree.Theyarediggingaholeontheground.Theyareclippingthehedge（修剪树篱）.1.

现在进行时的谓语结构be+现在分词(V-ing)ThegrammarwehavelearnedSummary2.现在进行时的句式①肯定句:主语+am/is/are+V-ing+其它.I

amreadingabookinthelibrary.②否定句：直接在am/is/are后加notIamwriting.I

amnotwriting.③一般疑问句及回答:问句,直接把am/is/are提句首,若原句有第一人称，把第一人称变成第二人称。ThegrammarwehavelearnedSummary肯定回答:Yes,主语+

be(be是要变化的，am/is/are).否定回答:No,主语+

be+not.You

aredrawingapig.---

Are