冀教版九年级英语上册《The Study of Living Things》Look into Science! PPT精品课件.pptx

Lesson28TheStudyofLivingThingsLookintoScienceUnit5

Doyouknowhim?Whatdoyouknowabouthim?He’sCharlesRobertDarwin.He’sabiologist.

butterfly复数：butterflies

biology

migrate

grandchildn.female

milkweed

biologyn.butterflyn.migratev.fantasticpletelyadv.grandchildn.生物学；生物蝴蝶移居；迁徙奇异的完全地孙子；孙女；外孙；外孙女

femalen.雌性的动物或植物；女子milkweedn.（植）马利筋chemicaln.化学物质puzzlingadj.令人费解的

Lookatthepicturesandthinkabout:What’sthepassageabout?Butterflies.

ReadPara.1andcompletethesentencesaboutDr.Chip.Dr.Chipteaches_________atauniversityintheUSA.Hestudiesonekindof______________________.And_____________aboutthebutterflyhavebeendrawinghisattention.biologyNorthAmericanbutterflyfantasticfacts

ReadParas.1-2andcompletethefactsaboutbutterflies.Fantasticfactsaboutbutterflies·Justlikeamigratingbird,thebutterfliestravelsabout_____kilometressouthin___________.·Thebutterfliesalways_________tothesamesmallpieceofforestand______thewinterthere.·Thebutterfliesthatreturntothesoutharethegreat-greatgrandchildrenofthebutterfliesthat______thenorth.·Thefemales____eggsononlyoneplant:milkweed.4000return/flyspendlayfall/autumnleftfor

ReadPara.3andcompletetheworriesofDr.Taylor.ThingsthatDr.Taylorworriesabout·InMexico,peoplecutdownthetreesthatthebutterfliesneedto____on.·IntheUnitedStateandCanada,farmersusechemicalsthat____milkweed.restkill

ReadParas.4-5andanswerthefollowingquestions.1.HowdoMexicoprotectthebutterfly?2.HowdotheUnitedStatesandCanadaprotectthebutterfly?Ithasbeguntoprotectpartsofitsforests.Theyhaveencouragedfarmerstousefewerchemicals.

3.Whatarethetwothingsthatscientistscan’tunderstand?1)Howdothebutterfliesknowwhentoflysouth?2)Howdoallthegreat-greatgrandchild