WORD CLASSES
Words which belong to the same class function in much the same way, so, identifying the word class is really useful in English: i.e, is the word "fly" and adjective, a noun, a verb, an adverb? can it belong to more than one word class? In English yes, it can. Look at the definition of "fly" from word reference and notice how a different word class makes such a big difference! And when you finish, check if you remember the word classes in English with this exercise.
For the verb: "to fly"
Simple Past: flew
Past Participle: flown
fly1 /flaɪ/
v., flew /flu/ or, for 11., flied, flown/floʊn/, fly•ing, n., pl. flies.
to move through the air using wings:[no object]
Outside the birds were flying.
fly2 /flaɪ/
n., pl. flies. [countable],
Insectsa two-winged insect, such as the common housefly.a fishing lure dressed to resemble an insect or small fish.
wordReference Random House Learner's Dictionary of American English © 2018.