"Das Ist Vs Das sind" Definition in German

 In German, "Das ist" and "Das sind" are both used to refer to or identify something, but they have distinct grammatical functions based on number.

   

1. **Das ist**: 

   - Translation: "This is" or "That is"

   - Usage: It is used with singular nouns or when referring to a single entity.

   - Example: "Das ist ein Buch." (This is a book.)

2. **Das sind**: 

   - Translation: "These are" or "Those are"

   - Usage: It is used with plural nouns or when referring to multiple entities.

   - Example: "Das sind Bücher." (These are books.)

### Summary:

- **Das ist** → singular (used with one item)

- **Das sind** → plural (used with multiple items)

Both phrases serve to identify or describe, but their application depends on whether you're talking about one thing or several.