Boni, nie stawiaj
nigdy przecinków przed "that"! :]
Boni pisze:This place is very important for every Christian in my town, thereby I think, that I should say something about this special place.
- "therefore" zamiast "thereby"
- wywal ten przecinek sprzed "that"

- "say" czy "write"? wypowiedź ustna czy pisemna?
Boni pisze:Each worshipper should know, that the church was build in 1565 by Zygmunt August.
- Może lepiej dać "every" zamiast "each"?
- bez przecinka!
Boni pisze:At the beginning it was made of wood and because of that it burned in 1796.
- obleci :D ...ale proponuję zmienić na: ...made of wood, which is why it burned...
Boni pisze:sacral place
"Sacral" to znaczy "krzyżowy" -- i nie o krzyż święty tu chodzi, tylko o kręgosłoup.

Zmień na "sacred".
W nastęnym zdaniu zamiast "every" daj "everyone". Datę oddziel przecinkami.
Boni pisze:Our church is quite big and has two high towers wich contain big bells.
...high towers, which contain...
Boni pisze:an beatiful image of St Mother
a beautiful image...
Boni pisze:Near the church there are many buildings which belong to our priests and a large car park.
Przecinki:
...many buildings, which belong to our priests, and a large car park.
albo:
...many buildings that belong to our priests, and a large car park.
Boni pisze:Behind the church there is an alley which leads on a cementary.
Zasada jest taka, że przed "which" zawsze stawiamy przecinek, a przed "that" nigdy. Dostaw przecinek.

"leads to"
Boni pisze:The church has been enlarged in XX century becausenumber of people living in our town had increased.
...was enlarged in the 20th century, because the number of...
Boni pisze:The church has ive altars and the main altar is in baroc style.
ive

five
baroc

baroque
Boni pisze:The church is very popular because there are held many performances of orchestra.
Taka sama uwaga, jaką dał tu Mischi.
Boni pisze:and I think that every Christian should do it as fast as he can.
"as fast as HE can"?

Ach, Boni, jesteś nie na czasie z poprawnością polityczną. Trzeba zmienić na "they". :]