BelowaresomechoicestogettingaroundLondonbypublictransportationTubesTheLondonUnderground，commonlyreferredtoasthe‘Tube'，istheoldestandmostextensiveundergroundsystemintheworldandpervades（遍及）boththelifea

　　BelowaresomechoicestogettingaroundLondonbypublictransportation

　　Tubes

　　TheLondonUnderground，commonlyreferredtoasthe‘Tube'，istheoldestandmostextensiveundergroundsystemintheworldandpervades（遍及）boththelifeandlayoutofLondon．Twelveundergroundlines，eachwithadifferentnameandcolour，aresupplementedbytheprivatelyoperatedDocklandsLightRailway（tel：（020）73639700）connectingtheCityofLondonandtheDocklands．Theentirenetworkisdividedintosixconcentriczones，whichdeterminethepriceoftickets．Inthecitycentre（zoneone）asingleticketcosts£1.50，otherwisesinglefaresare£0.90（onezone）upto£2.20（fourzones）．Carnetsoftenzone-oneticketscost£11．Ticketsmustbepassedthroughthebarrierticketgatesinorderforthepassengertoenterandleavethesystem（andavoida£10penalty（损失）fare）．TheLondonUndergroundruns05：30-24：30butshouldbeavoided（wherepossible）duringrushhour-08：00-09：30and17：00-18：30MondaytoFriday．

　　Double-deckerbuses

　　London'sfamousred‘Routemaster'double-deckerbusesareslowlybeingreplacedbymoremodernsingleanddoubledeckers．Therearenowonlytwofarezones．Anyjourneythatincludesthecitycentrezoneis£1andanyjourneyoutsidethiszoneis70p．Ticketsareboughtfromthedriverorbusconductoruponboardingandthereisa£5finefortravellingwithoutavalidticket．Carnetsofsixtickets（foranyzone）canbepurchasedfor£3.90．

　　Ferries

　　ThereareanumberofservicesoperatingontheThames．CommuterferriesbetweentheSavoyPier（Embankment）andGreenlandPier（Greenwich）arerunbyCollinsRiverEnterprises（tel：（020）79776892；website：www．thamescat．com）．Farescostbetween£1.50and£2.70forasingleand£2.50and£4.70return．RiversideLaunches（tel：02073525888）operateacommuterservicebetweenChelsea/CadoganandEmbankmentfor£4（single）or£8（return）．ThesecommuterservicesoperatebetweenMondayandFriday06：35-19：44．OnceinLondon，thereareanumberofpassesavailable，includingtheOne-dayTravelcardfor£4（usedafter09：30MondaytoFridayand