The word "welche" in German is an interrogative pronoun that translates to "which." Its form changes based on gender, case, and number. Here’s a brief overview of its usage across different cases:

 The word "welche" in German is an interrogative pronoun that translates to "which." Its form changes based on gender, case, and number. Here’s a brief overview of its usage across different cases:

### Nominative Case (Subject)

- **Masculine**: welcher

- **Feminine**: welche

- **Neuter**: welches

- **Plural**: welche

**Examples**:

- **Welcher Mann** kommt? (Which man comes?)

- **Welche Frau** spricht? (Which woman is speaking?)

- **Welches Buch** ist interessant? (Which book is interesting?)

- **Welche Autos** sind neu? (Which cars are new?)

### Accusative Case (Direct Object)

- **Masculine**: welchen

- **Feminine**: welche

- **Neuter**: welches

- **Plural**: welche

**Examples**:

- **Welchen Mann** siehst du? (Which man do you see?)

- **Welche Frau** rufst du? (Which woman are you calling?)

- **Welches Buch** liest du? (Which book are you reading?)

- **Welche Autos** kaufst du? (Which cars are you buying?)

### Dative Case (Indirect Object)

- **Masculine**: welchem

- **Feminine**: welcher

- **Neuter**: welchem

- **Plural**: welchen

**Examples**:

- **Welchem Mann** gibst du das Buch? (To which man are you giving the book?)

- **Welcher Frau** erzählst du das? (To which woman are you telling that?)

- **Welchem Buch** vertraust du? (To which book do you trust?)

- **Welchen Autos** hilfst du? (To which cars are you helping?)

### Genitive Case (Possessive)

- **Masculine**: welches

- **Feminine**: welcher

- **Neuter**: welches

- **Plural**: welcher

**Examples**:

- **Welches Buchs** Seiten sind interessant? (Which book’s pages are interesting?)

- **Welcher Frau** Stil ist einzigartig? (Which woman’s style is unique?)

- **Welches Autos** Farbe gefällt dir? (Which car’s color do you like?)

- **Welcher Autos** Geschwindigkeit ist beeindruckend? (Which car’s speed is impressive?)

### Summary

"Welche" is versatile and adapts based on case and gender. It’s essential for asking specific questions about people, objects, or categories in a given sentence. Practicing these forms will help you use them accurately in conversation!