chair
The German word 'Stuhl' is used to refer to a chair, which is a piece of furniture used for sitting. It can be used in various contexts, such as 'Sitz' (seat), 'Sessel' (armchair), or 'Hocker' (stool), depending on the type of chair. For example, 'Ich setze mich auf den Stuhl' means 'I sit on the chair'.
The chair is blue.
This is a simple sentence declaring the color of a particular chair. 'Der' is the masculine definitive article in the nominative case file that aligns with 'Stuhl', which is masculine in gender.
I am sitting on the chair.
This sentence talks about an ongoing action where the speaker is seated on the chair. The preposition 'auf' demands the dative case, hence 'der Stuhl' changes to 'dem Stuhl'.
The chair belongs to me.
This is an expression of possession, indicating that the chair is owned by the speaker. 'Mir' is the dative case of 'ich' (I), typically used to denote to whom something belongs.