sprawdzenie krótkiego tekstu

Temat przeniesiony do archwium.
Witam serdecznie, chciałem prosić o sprawdzenie tekstu którego nie pisałem sam, zaczerpnąłem ten tekst z pewnej książki, jednak nie rozumiem zabiegów typu "The tyres are used as the Earthship’s bricks" - dlaczego are i used (forma przeszła).
Proszę o sprawdzenie całości tekstu.

Pozdrawiam i z góry dziękuję ;)
are used - sa wykorzystywane. To jest strona bierna
'used' nie jest tu formą czasu przeszłego, ale formą Perfect, która jest też wykorzystywana w stronie biernej, np. 'był napisany' = 'was written'
The package contains everything that is needed exept the tyres.
They are pleased in the shape that you want the house to be and then they are filled with earth.
Dirty water from the kitchen and bathroom is also filtered and reused for the toilet

A jeśli chodzi o te połączenia is/are z czasownikiem w formie przeszłej to też jest dobrze?
except
are pleased = sa zadowalane

poza tym wyglada dobrze
Dzięki
Byłbym wdzięczny gdyby ktoś zerknął na resztę:

Image the home that is made from waste and yet doesn’t product any. Sounds out of this world, doesn’t it? Well back in the 19070 the first Earthship was designed and built by an architect named Mike Reynolds. He wanted to create an environmentally friendly house that would generate its own electricity and heating using local materials and recycled products.
The first Earthship was built using car tyres, cans, earth, and bottles. Today, anyone can order an Earthiship in a package and built it themselves. The package contains everything that is needed exept the tyres. But don’t worry. They can be found at most local dumps. The tyres are used as the Earthship’s bricks. They are pleased in the shape that you want the house to be and then they are filled with earth. This is the basis of the house’s heating system. The sun heats the earth in the tyres and this heat is stored and slowly released. Heat from the sun is also used to create electricity, and rainwater is filtered and stored in tanks under the house. Dirty water from the kitchen and bathroom is also filtered and reused for the toilet.
The Earthship is the dream green home. It’s cost close to nothing, it will be built very quickly and there aren’t any bills to pay. So why don’t you think about building your own Eartship and help protect the earth.
skoro to nie jest Twoja samodzielna praca, to nie mamy tu nic do roboty.
Temat przeniesiony do archwium.

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