Questions & Answers about Ten amortyzator jest nowy.
Because amortyzator is a masculine singular noun, and the demonstrative ten has to agree with it in gender and number.
In the nominative singular:
So:
- ten amortyzator = correct
- ta amortyzator = incorrect
- to amortyzator = incorrect
Ten is a demonstrative adjective/pronoun, meaning this in this sentence.
It works like English this and changes its form depending on the noun:
- ten samochód = this car
- ta książka = this book
- to okno = this window
Here it modifies amortyzator, so it must match its masculine gender.