To diagram a sentence, we start with the key elements: Subject and verb. This is because the subject tells you what the sentence is about and the subject tells you what the subject is doing. Then, if the sentence has a complement, like action verbs and direct objects, we should link them.
After, if the sentence has a preposition, we should add it on a line between the verb. Finally, adjectives and verbs are added on lines below the subject and object, and the verb respectively.
