Here are some examples:
* Sentences without nouns:
* "Go!" (This is an imperative sentence, commanding action.)
* "Stop!"
* "Help!"
* Sentences without adjectives:
* "The cat sat on the mat." (No words describe the cat or the mat.)
* "She walked to the store."
While nouns and adjectives are common parts of speech, sentences can exist without them, especially when focusing on actions, commands, or simple statements.