2、k/rantheriskofdamaginghisbusanddroveitintothebackofthethieves’car.Johnsavedmeattheriskofhisownlife.②vt.冒……危险,使……遭受危险riskdoingsth,risksth(todo)We’dbettertakeataxi.Wecan’triskmissingtheplane.Johnriskedhisownlifetosaveme.★picnic n. 野餐去野炊go for a picnichaveapicnic★edge: 边缘;边;优势on/at t
3、he edge of在……边上;濒于,几乎翻译:Many wild animals are on the edge of extinction.★possessionn.所有possessv拥有.1)in/takepossessionof占有拥有(主语为人)Heisinpossessionofthisfarm。2)inone'spossession=inthepossessionofsb.“为某人所拥有;被某人控制”(主语为物)Thehouseusedtobeinmypossession,butnowitisinthepossessionofanoldla