全优课堂英语选择性必修第一册(北师大版)课件UNIT 3 period 2.pptx

UNIT3CONSERVATION;课前自主预习;A．太阳光(能)的

B．(使)孵化

C．各种各样的，形形色色的

D．影响

E．(使)恢复;1．Thehenmustfindawarmplacetohatchhereggs.()

2．Afteraweekinbed,shewasfullyrestoredtohealth. ()

3．Thedivorceaffectedeveryaspectofthecouple’slife. ()

4．Withitsvariedclimate,thecountryattractsbothwinterandsummersportsenthusiasts. ()

5．Saturnisthesecondbiggestplanetinthesolarsystem. ()

【答案】1—5BEDCA;Ⅱ.猜单词拼写

1．usualadj.→__________adj.异常的；不平常的

2．increasev．→__________vi.vt.减少

n.减少；减少的量

3．dangern．→__________adj.濒危的

【答案】1.unusual2.decrease3.endangered;Ⅲ.猜短语填空

beatrisk;betoblame;haveabadeffecton;dieout;wipeout

1．SomeofthetraditionalcustomsaredisappearinginChina.

＝Someofthetraditionalcustomsare________________inChina.

2．Thevillageswerealldestroyedcompletelyinthewar.

＝Thevillageswereall__________inthewar.

【答案】1.dyingout2.wipedout;3．Thedrivershouldbeartheblameforthetrafficaccident.

＝Thedrivershould_______________forthetrafficaccident.

4．Thecarshaveabadinfluenceontheenvironment.

＝Thecars________________________theenvironment.

5．Allhousesneartheseasareindangerofflooding.

＝Allhousesneartheseas___________________offlooding.

【答案】3.betoblame4.haveabadeffecton5.areatrisk;课文语篇研读;Ⅰ.根据课文完成表格，每空不多于三个单词

TheSixthExtinction;【答案】4.dyingout5.negativelyaffected

6.threequarters;【答案】7.Howtoavoid8.endangeredspecies

9.lifestyles10.farmingmethods;Ⅱ.判断正误

()1.Over90percentofalleverlivingspeciesextinctedinthelast500millionyears.

()2.Itisnaturalforspeciestodieoutusually.

()3.Ifasixthmassextinctionoccurs,entirespecieswillbewipedout.

()4.Inordertoavoidthesixthextinction,weneedtostoptravellingaround.

【答案】1－4FTFF;Ⅲ.阅读理解

()1.Whatisoneofthereasonsforextinction?

A．Sleepofvolcanoes. B．Changesinsealevels.

C．Riseinoxygen. D．Dropintemperature.

()2.Whatarescientistsmainlyconce