SectionAUnit9Whenwasitinvented?MuseumInventionMuseumHowmuchisit?18Howmuchisit?RuleOnlyonegroupthatgetsthemostscores(分數)canenterthemuseum.Guessing:Whatisit?part1Guessing:Whatisit?Guessing:Whatisit?MicrowaveovenItisusedforcookingandheatingfood(加熱)Whatfoodcanbeheatedinit?Whatisitusedfor?Itisusedforcounting.calculatorWhataretheyusedfor?Theyareusedforgivinglight.lightbulbsWhatis/are…usedfor?It’s/They’re…usedfor…part2alarmclockIt’sanannoyinginvention.BecauseitwakesmeupwhenI’msleeping.Ithinkcomputeristhemosthelpfulinvention.BecauseithelpsmesearchtheinformationthatIneed.part3Asurvey:Whatdoyouthinkisthemosthelpful/annoyinginventions?NameHelpfulinventionsWhyAnnoyinginventionswhyUsefulexpressions:A:Whatdoyouthinkisthemosthelpful/annoyinginvention?B:Ithinkthemosthelpfulinventionis…A:Whyisthat?B:Well,itgives/helpspeople…part4Whowas

(telephone)invented

by?Itwasinvented

by

Bell.HenryFordEdisonBellTs’aiLunWrightbrothersfisherinventorsinventionsPapermakingPlaneWashingmachineLightbulbCarTelephone19761971197619271885Whenwasitinvented?1bListenandmatchtheinventionswiththedates.abedc18761885192719711976dabec18761885192719711976part5Whenwas

thecarinvented?Itwasinventedin1885.ChineseinventionsHowmanyinventionsdoyouknow?Groupwork:WhatWhenWhoBeusedforPrintingTangDynasty

朝代ChineseMakingcopiesbattery-operatedslippersheatedicecreamscoopshoeswithadjustableheels電池供電的拖鞋加熱的冰激凌勺可調節后跟的鞋2aListenandnumbertheinventionsintheorderthatyouhear.3122bListenagain.Matchtheinventionswiththeirinventorsanduses.Inventionshoeswithadjustableheelsbattery-operatedslippersheatedicecreamscoopWhowasit/weretheyinventedby?ChelseaLanmonJayceCoziarandJamieEllsworthJulieThompsonWhatisit/aretheyusedfor?scoopingreallycoldicecreamseeinginthedarkchangingthestyleoftheshoesmusiccandleactivityglassestemperaturecupChallenge:Trytobeaninventor!Welcome!GrammarFocus(P69)Thepassivevoice被動語態在被動語態的句子中,謂語部分的結構是be+過去分詞。被動語態的句子的時態變化反映在be動詞上。也就是說,把一個句子做成被動語態的句子,只需要寫出be動詞的所需時態,再加上所給動詞的過去分詞就行了。當然,這只是指謂語部分而言。我們知道,be動詞作為一個獨立的謂語動詞有自己現在分詞(being)和過去分詞(been)。那么,下面我們來看看be在各種時態中的變化形式：一般現在時am/is/are

一般過去時was/were

一般將來時shall/will+be

過去將來時would/should+be

現在進行時am/is/are+being

過去進行時was/were+being

現在完成時have/has+been

過去完成時had+been重點句型

1.

Who

was

the

telephone

invented

by?

It

was

invented

by

Bell.

電話是誰發明的？

電話是貝爾發明的。

2.

When

were

electric

slippers

invented?

They

were

invented

last

year.

電拖鞋是什么時候被發明的？它們是去年被發明的。

3.

What

are

they

used

for?

它們是用來做什么的？

4.

They

are

used

for

seeing

in

the

dark.

它們是用來在黑暗中看