Unit 3 tomorrows world Grammar and usage 课件

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1、Unit3tomorrowsworldGrammarandusage课件Theman_________(call)“Goodhusband”.iscalledThepetdog________________(treat)byveterinary.isbeingtreatedAfrog__________(catch)byabigbirdjustnow.wascaughtbe+doneThepassivevoiceam/is/are一般现在时am/is/are+being现在进行时shall/will+be一般将来时have

2、/has+been现在完成时+donebe+donewas/were一般过去时was/were+being过去进行时would+be过去将来时had+been过去完成时beHowcanwechangeasentenceintothepassivevoice?1.Findouttheobjectofthesentenceanduseitasthesubjectofthesentencewiththepassivevoice.2.Decidethetenseofthesentenceandusetherelatedformofi

3、tspassive.3.Ifnecessary,use“by”tojointheformersubject,whichshouldbeputintoitsobjectform.Whendoweusethepassivevoice?Manyhouseswillbebuilthere.1.不知道或没必要指出动作的执行者。Thesong“TheEastisRed”waswrittenbyapoorpeasant.2.强调动作的承受者。Theplanwassupportedbythosewhowishedtohavemorechan

4、cestospeakEnglish.3.动作的执行者有较长的修饰语。Youarerequestedtoattendthemeeting.4.出于礼貌，不愿意说出动作的执行者。Changethefollowingsentencesintothepassivevoice:1.Allofuslikeher.2.Wearediscussingthequestion.3.Wehaveputoffthemeeting.4.Iwilldevelopmypicturenextweek.Sheislikedbyallofus.Thequest

5、ionisbeingdiscussed.Themeetinghasbeenputoff.Mypicturewillbedevelopednextweek.Fillintheblankswiththerightformofthewordsgiven:I___________(give)anewbookbymyfatheronmybirthday.English___________(find)veryuseful.3.Thework______________(finish)tomorrow.4.Theflowers_____

6、_________(water)bythemnow.wasgivenisfoundwillbefinishedarebeingwateredTherailway________________(build)thistimelastyear.Thenewway_______already_________(build).Thenewrailway___________(build)bytheendoflastyear.Hetoldmethesportsmeeting____________(hold)thenextmonth.

7、Rice___________(grow)inthesouthoftheStates.wasbeingbuilthasbeenbuilthadbeenbuiltwouldbeheldisgrownModalverb+be+doneWecanusemodalverbsinthepassivevoicetotalkaboutability,possibility,duty,permission,etc.FirefighterscouldbetrainedusingRealCine.Computerscancalculatethe

8、positionofthevieweratanytime.Thepositionoftheviewercanbecalculatedatanytime.Practice:1.Theviewercantouchtheobjectsinthefilm.2.Theviewermayfeelare