P RESENT P ERFECT AND P RESENT P ERFECT C ONTINUOUS

Solar cars use photovoltaic cells (PVC), which are in solar panels. PVC enables the panels to convert the sun’s energy into electricity that we can use. However, solar technology is expensive, and some solar panels can cost up to $400 each. The reason why some panels are more expensive than others is because the price is dependent on how fast the panel can capture and convert the energy. Solar powered cars that are used for racing can go faster than 60 miles per hour, but their panels cover the car’s body and cost hundreds of thousands of dollars.

P RESENT P ERFECT AND P RESENT P ERFECT C ONTINUOUS Present Perfect To talk about a finished activity I’ve read Hamlet. To focus on a result of an activity, especially when we give a number or a quantity. He has run three miles. (focus on the result) Present Perfect Cont To talk about an unfinished activity I’ve been reading Hamlet. To focus on the activity itself, especially to explain the visible consequences of it. He’s been running for an hour and he’s very tired. (focus on the activity and its consequences)

1. As I ran on to the platform the train was just pulling out. 2. The plane took off five minutes ago. 3. I’ve already checked in my luggage. 4. He was going through passport control when he realised he didn’t have his passport. 5. She pulled up suddenly at the traffic lights.

pull out = to leave a station (a train) take off = to leave the ground and begin to fly (of an aircraft) check in = to leave or accept sth that is to be transported by train or by air go through = to move between a door or a gate pull up = to stop (a vehicle)

K EY WORDS P. 36, EX. 2 Aeroplanes/AirportsTrains/StationsBoth Boarding card Flight Gate Passport control Check-in Trolley = kolica Carriage = vagon Platform = peron Ticket Ticket collector Baggage = prtljag Seat Passenger