The formula for present perfect tense is:
Subject + have/has + past participle (sung) + object
For example:
- I have sung a beautiful song.
- She has sung in a talent show.
- They have sung many songs together.
In these examples, "I," "she," and "they" are the subjects, "have" is the helping verb (since these sentences are in present tense) indicating the present perfect tense, "sung" is the past participle of the verb "sing," and "a beautiful song," "in a talent show," and "many songs" are the objects.
Remember, present perfect tense is used to talk about actions that started in the past and are still relevant or have an impact on the present. It's often accompanied by time expressions such as "recently," "since," "for," or "already."