Stem Practice

​How do I find the stem of a noun? How do I find the stem of a verb? Of an adjective?

The stem of a noun is obtained by removing the genitive singular ending from the genitive singular form.

puella,puellae f - puell

servus, servi m - serv

imperator, imperatoris m - imperator

The present stem of a verb:

is obtained by removing the -re from the 2nd principal part, the infinitive form.

ambulo, ambulare, ambulavi, ambulatus - ambula

The perfect stem of a verb:

is obtained by removing the -i from the 3rd principal part

ambulo, ambulare, ambulavi, ambulatus - ambulav

The stem of a 2-1-2 adjective:

is obtained by removing the -a from the feminine part

bunus, bona, bonum - bon