thescienceofthestars课件

“Youby10o’clockatthelatest克拉克先生对他的女儿说:“你必须在10点之前回家”aretobehomeD2WaterhaddisappearedfromplantslikeMarsorsateelliteslikethemoon，whichturnedintowaterwhentheearthcooleddownItallowedtheearthtodissolveharfulgasesintooceansandseas1Itexplodedloudlywithfireandrock，andthenanswerthefollowing2questionsHowdidwatercomeintobeingontheearth?2)what’sthesignifienceofthepresenceofwaterontheearth?Theexxplosionoftheearthproducedwatervapour，这些最终产生了水蒸气intime最终;及时Eg:1)Shewillbebackintimetopreparedinner她来得及回来准备晚饭你迟早能学会做这件事2)Youwilllearnhowtodoitintime(sth)betodo不可避免要发生或必须发生(表示以后将发生的事Sheistobehonouredforthisgreatwork她一定会因这部著作而获得荣誉Exercises:HewantstoseechangesinthecompanyandI’msurehewillontimeBatatimeCatonetimeDintime准时，MrClarksaidtohisdaughter，按时每次;在某时同时;曾经最终;及时Thetrainarrivedontime火车准时到达，Readthefirstparagraph，whichwereintimetoproducethewatervapour…地球猛烈爆炸起火，并喷涌出岩石，butitstayedontheearthThisishowtheearthbegan，