Look at the snake in the tall grass!
The nouns in the sentence are excitement and air.
an explanatory sentence is explaining what you said in your topic sentence
it is a noun. The excitement made me happy.
I hope my answer causes a lot of excitement!
Answering your question gave me a feeling of excitement.
The room was abuzz with excitement as the Bride appeared at the top of the stairs.
My excitement will diminish.
You could see the excitement of the four year olds as they played in the water.
Corrected sentence: Delirious with happiness, the friends shared their excitement as the good news spread.
Exclamatory
The girl jumped high into the air with excitement smeared across her face!
The past tense:They liked the excitement.The future tense:They will like the excitement.