finish的过去式形式怎么写？

When we want to talk about an action or task that happened in the past and is completed, we use the past tense form of the verb. In the case of "finish", the past tense form is "finished". For example, "I finished my homework yesterday" or "She finished reading the book last night". The addition of "-ed" at the end of the verb indicates that the action is completed. It is important to understand and use the correct past tense forms in order to accurately convey information about past events.