If I do not use electric light, I will turn off.
If I do not watch television, I will turn off.
If the weather is not too hot, I will use fan instead of air conditioner.
If I go to a nearby place, I will walk or use bicycle instead of motorcycle or car.
If I go shopping, I will use cloth bags instead of plastic bags.
If I drive a car, I will drive speed not exceeding 90 km/hr.
If I park the car for long time, I will stop the engine.
If I choose to buy electric appliances, I will be buying energy-efficient electric appliances.
If I choose to buy a car, I will be buying eco-car.
If the weather is bad, I will plant tree for save the world.