Nouns: person place or thing, idea
Coordinate adjectives: two words describing nouns ex. The fluffy,white dog.
Adjectives: describing the noun
The sentence active is: I keep the mayonnaise in the refrigerator.
The sentence passive is: The mayonnaise is kept in the refrigerator (same thing as the question)
If the subject is performing the action, then the sentence is in an active voice. However, if the subject is simply receiving the action, then the sentence is in a passive voice. A helpful tip is to add "by zombies" after the verb. It helps a ton. If you can insert "by zombies" after the verb then it is passive.
There was never a sound beside the wood but one, And that was my long scythe whispering to the ground. ONE sentence would be included if these lines from Mowing were read aloud.