A syntactic tree, also called a syntax tree or phrase-structure tree, shows how a sentence is built. The words sit at the leaves, and labels such as S, NP, VP and PP show which words group into phrases. Linguistics students draw these trees to make claims about constituency and attachment visible.
Sentence mode builds a transparent draft for common short English patterns. When a sentence has a verb, an object NP and a final PP, it also shows two possible PP attachments so you can compare them. It is not a full natural-language parser. Unfamiliar verbs, questions, embedded clauses and other ambiguities still need your judgment. Switch to bracket mode to enter the structure your assignment requires.
Bracket notation gives you full control over labels and grouping. For example, [S [NP [Det The] [N cat]] [VP [V slept]]] makes an S node with an NP child and a VP child. The preview, copied brackets and exported image always show the same tree.
Terminal words
The words of the sentence sit at the ends of the branches.
Phrase labels
NP, VP, PP and your own labels mark each constituent.
Hierarchy
Parent and child nodes show how words group into phrases.
Attachment
Move a PP or another phrase to show a different reading.
