The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram demonstrates how

electricity

is produced in a hydroelectric

power

station

in

Change preposition

during

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the

day

and at

night

.

The first step is

to make sure

water

in

river

Correct article usage

the river

show examples

flow

Change the verb form

flows

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into the high-level reservoir which is blocked by a dam.

Then

water

Add an article

the water

show examples

flows to the

power

station

. There some reversible turbines are set up and they are connected to a generator, which is the core equipment to generate

electricity

.

Then

the generator turns the

water

power

into

electricity

and it is conveyed by the powerlines to the national grid. The generating process of

electricity

differs in the

day

and at

night

. In the

day

, the

water

naturally flows into the

power

station

while

it is pumped back at

night

instead

. Meanwhile, during the

day

, the

water

which

go

Change the verb form

goes

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through the

power

station

flow

Correct subject-verb agreement

flows

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into the low-level reservoir directly, but it is pumped back into the high-level reservoir at

night

.