：必修3 Unit4 Learning about language

Answerkeyforexercise1:-enceun-presentcertainviolentfairconfidentpaiddifferentlikepatientkindpresenceviolenceconfidencedifferencepatienceuncertainunfairunpaidunlikeunkind-al-istcultureartglobephysicsuniversechemistryagriculturebiologymathematicsscienceculturalglobaluniversalagriculturalmathematicalartistphysicistchemistbiologistscientistCACBzxxkAnswerkeyforexercise2:Answerkeyforexercise3:Isthemoonaplanet?Thisquestionis______________ifstudentsaretoshowthattheyunderstandthenatureof__________.Somescientiststhinkthattheearth______________themoonbecausethemooncirclesourplanet.Othersbelievethatthemoon_______beforetheearthwasformed.Theythinkthatearlierintimeittravelledthroughspaceasasmallplanetwhichwascaughtbytheearth’sgravity.__________,itgoesaroundourplanet.Theevidenceforthistheoryisthatthe_____thatmakeuptherocksonthemoonseemtobedifferentfromthoseonearth.Whatisclearisthatthemoonissmallerthantheearthandthis_________it_______escapingfromtheearth.Althoughitsoriginmaystillbea________,themooncanneverbeanythingmorethanasatelliteoftheearth.fundamentalastronomygavebirthtoexistedAsaresultatomspreventsfrompuzzleIsthemoonaplanet?Thisquestionis______________ifstudentsaretoshowthattheyunderstandthenatureof__________.Somescientiststhinkthattheearth______________themoonbecausethemooncirclesourplanet.Othersbelievethatthemoon_______beforetheearthwasformed.Theythinkthatearlierintimeittravelledthroughspaceasasmallplanetwhichwascaughtbytheearth’sgravity.__________,itgoesaroundourplanet.Theevidenceforthistheoryisthatthe_____thatmakeuptherocksonthemoonseemtobedifferentfromthoseonearth.Whatisclearisthatthemoonissmallerthantheearthandthis_________it_______escapingfromtheearth.Althoughitsoriginmaystillbea________,themooncanneverbeanythingmorethanasatelliteoftheearth.zxxkfundamentalastronomygavebirthtoexistedAsaresultatomspreventsfrompuzzle(二)归纳拓展全析考点intime及时innotime立即；马上atonetime曾经；一度attimes有时；偶尔ontime准时atatime每次；一次(二)归纳拓展全析考点prevent＋宾语＋fromdoingstop＋宾语＋fromdoingkeep＋宾语＋fromdoing阻止……干某事protect...from(against)...保护……不受……侵袭(from后接能带来伤害或损害之物)emotionalwordscalmwordsAnswerkeyforexercise4:violentangryzxxkrudeshockedexcitedcrazypatientgentlerelaxingkindeasy-goingcalm