Question

before our house was built, we contentedly rented from friends for years.

Answer 1

next time please post the full question. it is asking us to diagram this sentence.

start with the main subject + verb (we and rented, respectively)
"contentedly" is an adverb that modifies rented, so draw a diagonal line from the main verb and write contentedly

"from friends" and "for years" are two prepositional phrases that modify rented, so diagram them both accordingly

now, "before our house was built" is a suboordinate clause with "before" acting as the suboordinating conjunction. since this modifies the main verb rented, draw a dashed line from rented, write "before" on the dashed line, and from the other end of the dashed line, diagram "our house was built" as you would a normal clause

references:



https://www.english-grammar-revolution.com/images/basic_diagram_adverb_clause_forweb.jpg

http://grammar.ccc.commnet.edu/grammar/diagrams2/one_pager1.htm

https://www.grammar-island.com/diagramming-adverbs.html