1. When the switch is thrown, the light comes on.
When the water boils, its temperature reaches 100
degree.
When the key is turned in the ignition, the engine
starts.
When the switch is open, current does not flow in
the current.
When the switch is opened, current stops flowing
Propositions. A lift pump is a device which is used for
raising underground water to the surface. It consists of
a copper pipe, a copper cylinder with a spout, steel
piston, a steel piston rod, two rubber valves and an iron
pump handle. The pipe leads from underground
reservoir of water up to the cylinder. The first valve is
located at the top of the pipe, where it is joined to the
cylinder. The second valve is set in the bottom of the
piston, which is inside the cylinder. The pump handle is
attached to the top of piston rod, which comes out
through the top of the cylinder. The other end of the
piston rod is attached to the piston.
2.4.2. When….
Is reduced
closes
Is lifted
enters
Is raised
flows
rises opens Is pushed
The lift pump operates in the following way. When the pump handle is pushed down first
time, the piston is raised to a position a little below the level of the spout and the pressure
inside the cylinder is reduced. Valve A is lifted. When the valve A is lifted, water enters
the cylinder. When the pump handle is raised, the piston is pushed down into the
water. Valve B, which is in the bottom of piston, opens and water flows through it. When
the pump handle is pushed down again, the piston rises again. Valve B closes and the
water above it rises up to the level of the spout, where it flows out.
As a result …. First, the pump handle is pushed down. As a result of this, Valve A
opens. As a result of this, the pressure inside the cylinder is reduced. As a result of
this, Valve B closes. As a result of this, water enters the cylinder. As a result, the piston
is pushed down into the water. As a result of this, Valve B, which is in the bottom of
piston, opens? Then, the pump handle is raised again. Next, the pump handle is
pushed down again. As a result of this, Valve B closes. The lift pump operates in the
following way.
This causes…..to and This, in turn, causes…to…. Example 1:
a) First, the pump handle is pushed down. As a result, the piston rises.
b) First, the pump handle is pushed down. This causes the piston to rise.
Example 3: a) As aresult, the pressure inside the cylinder is reduced.
b) This causes the pressure to be reduced. + Object (Noun) + Base form (Verb
