The verb "choose" is an irregular verb, which means it does not follow the regular pattern of adding "-ed" to form the past tense and past participle. Instead, it changes its form entirely. For example, "Yesterday, I chose a book from the library." In this sentence, "chose" is used as the past tense of "choose".
The past participle form "chosen" is used in perfect tenses, such as "I have chosen a new career path." In this example, "chosen" is used as the past participle.
The present participle form "choosing" is used to indicate an ongoing or continuous action. For instance, "He is choosing a new outfit for the party." Here, "choosing" is the present participle.
In summary, the past tense of "choose" is "chose", the past participle is "chosen", and the present participle is "choosing". These different forms are used to convey various tenses and aspects in English grammar.