This is the 362nd most frequent Polish word.
ta
The Polish word "ta" means "this" or "the" and is the feminine singular form.
'Ta' is a demonstrative adjective used here to specify the noun 'książka' (book). It agrees with the noun it modifies in terms of gender, number, and case.
Ta książka jest bardzo interesująca.
This book is very interesting.
Here, 'ta' serves as a demonstrative adjective specifying the feminine singular noun 'dziewczynka' (girl) and is in the nominative case.
Czy ta dziewczynka to twoja siostra?
Is this girl your sister?
In this case, 'tę' is the accusative, feminine singular form of 'ta,' showing the grammatical adjustment to match the noun's case.