高中英语人教版必修第二册UNIT 2 WILDLIFE PROTECTION3.Discovering Useful Structures.pptx

Book2Unit2WildlifeProtection（Period3）

Discoveringusefulstructures年级：高一年级学科：英语（人教版）

LearningObjectives1.Tograsptheform,meaningandusageofthepresentcontinuouspassivevoice;2.Tobeabletotalkaboutwildlifeprotectionusingthepresentcontinuouspassivevoice;3.Toarousestudents’awarenessofwildlifeprotection.

Q:Whatistheanimalkeeperdoing?Heisstrokingtheelephant.Q:Whatistheelephantdoing?......Howcanwedescribethepicturewiththeelephantasthesubject?

Thepresentcontinuouspassivevoice

Review:thepresentcontinuoustenseThetigerisroaring.Thepandaissleeping.Thebasicform:S(主语)+be(am/is/are)+doing

Review:thepassivevoiceThebirdistrapped.Themonkeyiscaged.Thebasicform:S(主语)+be(am/is/was/are/were)+doneThink:Howcanwecombinethepresentcontinuousandthepassivevoice?

Underlinethepresentcontinuouspassivevoicebelow:1.Africanelephantsarebeinghunted.2.Whatisbeingdonetohelpthem?3.Whatmeasuresarebeingtakentohelpthem?Morerelativesentencesinthisunit:(Paragraph2on16)Theyarebeinghunted,illegally,fortheirvaluablefur.(Paragraph7on16)Muchisbeingdonetoprotectwildlife.Think:Canwesummarizethebasicformsofthepresentcontinuouspassivevoicenow?

Thepresentcontinuouspassivevoice形式结构肯定S＋am/is/are＋beingdone.否定S＋am/is/arenot＋beingdone.一般疑问Am/Is/Are＋S＋beingdone？特殊疑问疑问词＋am/is/are＋S+beingdone？

Q:Whatistheanimalkeeperdoing?Heisstrokingtheelephant.Q:Whatistheelephantdoing?Howcanwedescribethepicturewiththeelephantasthesubjective?Theelephantisbeingstrokedbytheanimalkeeper.

ThepresentcontinuouspassivevoiceWeusePresentContinuousPassiveforactionshappeningrightnoworinprogressatthemomentofspeakingwhenwewanttofocusattentiononthepersonorthingaffectedbytheaction,whenthesubjectisunknown,unclearorirrelevant.Theelephantisbeingstrokedbytheanimalkee