Unit 3 Language practice
課題module 4 great inventions unit 3 language practice
教 學 目 標德育目標:to know about some great inventions 知識目標: to practice the use of passive voice能力目標:to complete a task about “how to improve inventions”
重點被動語態:情態動詞的被動語態: 情態動詞(not)+ be +過去分詞現在完成時—— have/has +been+動詞的過去分詞
難點情態動詞的被動語態: 情態動詞(not)+ be +過去分詞現在完成時—— have/has +been+動詞的過去分詞
課型revision and application
教法formal and interactive practicespart i: revisionlanguage practice現在完成時的被動語態: have/has(not) been +過去分詞paper and printing have been used for ages.the battery hasn’t been changed for a couple of months.has it been published yet?情態動詞的被動語態: 情態動詞(not)+ be +過去分詞information can be kept on cd-roms.books could only be produced one at a time.can books be replaced by computers?conclusion (i)當我們不知道誰是動作的執行者,或者沒有必要指出誰是動作的執行者時,或者只需強調動作的承受者時,要用被動語態。被動語態:主語是動作的承受者 。被動語態的構成:be +動詞的過去分詞一般現在時—— am/is / are +動詞的過去分詞一般過去時—— was/were +動詞的過去分詞情態動詞—— aux.v. (must/can/could/may…)+ be +動詞的過去分詞現在進行時—— be(am、is、are)+being +動詞的過去分詞一般將來時—— will be/be going to be +動詞的過去分詞現在完成時—— have/has +been+動詞的過去分詞時態被動語態結構一般現在時 am/is/are done一般過去時 was/were done現在進行時 am/is/are being done過去進行時 was/were being done一般將來時 will be done過去將來時 would be done現在完成時 have/ has been done過去完成時 had been done主動語態如何改成被動語態?1. 主動語態的賓語改成被動語態的主語。2. 主動語態的謂語動詞改成被動語態的謂語動詞。do----be done3. 注意保持時態和人稱的一致。 4. 帶雙賓的謂語動詞有兩種改法。當把直接賓語改成主語時,謂語動詞后必須加適當的介詞: to / for.
如:give-- be given to 此類動詞還有:pass show send… 再如:buy--- be bought for此類動詞還有:make draw cook mend…5. 一些動詞不定式在主動語態中省略to作賓語補足語,改成被動語態時,to必須還原。注:1. 不及物動詞(vi.)不用被動語態。如:happen、take place 、appeardisappear…沒有被動形式。幾種特殊結構1.my uncle gave me a gift on my birthday.----• i was given a gift on my birthday.• a gift was given to me on my birthday.2.we often hear him play the guitar.• he is often heard to play the guitar