The Sentence Diagram Generator visually represents the grammatical structure of the sentence: "My dear uncle and his precious wife sent their two sons and three beautiful daughters a welcome-home letter."

1. Subject: "My dear uncle and his precious wife"

   • "My" (determiner) modifies "uncle"
   • "dear" (adjective) modifies "uncle"
   • "his" (determiner) modifies "wife"
   • "precious" (adjective) modifies "wife"

2. Compound Subject: "uncle" and "wife" are connected with "and".

3. Predicate: "sent"

   • Main verb of the sentence.

4. Direct Object: "a welcome-home letter"

   • "a" (determiner) modifies "letter"
   • "welcome-home" (compound adjective) modifies "letter"

5. Indirect Object: "their two sons and three beautiful daughters"

   • "their" (determiner) modifies "sons"
   • "two" (numeral) modifies "sons"
   • "three" (numeral) modifies "daughters"
   • "beautiful" (adjective) modifies "daughters"

6. Compound Indirect Object: "sons" and "daughters" are connected with "and".

This structure can be visually represented using the Sentence Diagram Generator, allowing for a clear understanding of the relationships between the components of the sentence.