九年級英語Unit9教學課件—【精品課件】Unit6Whenwasitinvented?SectionA(1a-1c)Guessing:computerWhatisit?John1971ComputerwasinventedbyJohnin1971.Guessing:Whatisit?TVBaird1927TVwasinventedbyBairdin1927.Guessing:Whatisit?carKarlBenz1885CarwasinventedbyKarlBenzin1885.Guessing:Whatisit?telephoneBell1876TelephonewasinventedbyBellin1876.1a

Lookatthethingsbelow.Discussthemwithyourgroup.A:IthinktheTVwasinventedbeforethecar.B:

Well,IthinktheTVwasinventedafterthecar.

A:When

was

thecar

invented?

B:Itwas

invented

in1885.A:Was

thecarinvented

before/after

theTV?B:Yes,itwas./No,itwasn‵t.

1876188519271971Discussing1b

Listenandmatchtheinventionswiththeyears._____1876_____1885_____1927______1971dacbGroupworkA:Whatisthis?B:Itisa／an_________.A:Whenwasitinvented?B:Ithinkitwasinventedin____.A:Wasitinventedin_____?B:Yes,______./No,_______.18701760156417882007句型1.肯定句:主語+was/were+done+(by…)LiMingwaschasedbythedog.2.否定句：主語+was/were+not+done+(by…)LiMingwasn'tchasedbythedog.3.一般疑問句：Was/were+主語+done+(by…)WasLiMingchasedbythedog?Yes,hewas./No,hewasn‘t.

IreadanEnglishbookyesterday.(改為被動句)AnEnglishbook__________by____yesterday.2.Thebuildingswerebuiltbyworkerslastyear.(否定句)Thebuildings__________byworkerslastyear.3.Thebookwasfinishedlastweek.（一般疑問句并做肯定回答）____thebook______lastweek?____,______.wasmeread

Exercisesweren‘tbuiltfinishedYesitwasWas

助記：一般過去時，被動用bedone,be有was/were；否定be后加not,疑問be放主語前。summary

一般過去時的被動語態為：was/were+動詞的過去分詞Homewor