Answer:
Am:
present participle - being
past participle - been
become:
present participle - becoming
past participle - become
begin:
present participle - beginning
past participle - begun
catch:
present participle - catching
past participle - caught
buy:
present participle - buying
past participle - bought
come:
present participle - coming
past participle - come
do:
present participle - doing
past participle - done
fall:
present participle - falling
past participle - fallen
choose:
present participle - choosing
past participle - chosen
Explanation:
The present participle of a verb is formed by adding -ing to it. It can function as an adjective or as a part of verb tenses (the "continuous" tenses). Study the examples below:
- The falling leaves only make the atmosphere more melancholic.
X
- The leaves are falling in beautiful spirals.
In the first sentence, "falling" works as an adjective, attributing a characteristic to the leaves. In the second sentence, it functions as a verb, part of the Present Continuous Tense, to indicate an action in progress.
The past participle is a verb form used to talk about completed actions. It is used to form perfect tenses in the active voice and all tenses in the passive voice. Study the examples below:
- She has chosen the one she likes best. (Active Voice)
- The one she likes best was chosen by her. (Passive Voice)