Revelle Humanities Grammar Handbook
6 Sentence fragments
7 Run-on sentences
8 Verb agreement
13 Passive voice
15 ESL
17 Misplaced modifiers
18 Pronoun reference
20a Comparisons
21 Parallel construction
23 Commas
23d Sexist language
25/6 Semicolons & colons
29 Ellipsis
31 Brackets
35 Apostrophes
36 Abbreviations
37 Underlining
39 Numbers
41b Slang
41e Jargon
41f Pretentious language
42c Idioms
42e Clichés
43a Fluff

13 Passive voice
As its name implies the active voice generally conveys a more active, engaged tone in one's writing. Passive voice, by contrast, often conveys an indirect and hesitant tone.

Passive voice: The suitors were rebuffed by Penelope's strategems.

Active voice: Penelope's strategems rebuffed the suitors.

Since Penelope is the actor in this situation, show her doing the action by using the active voice.