Present perfect.
I/you/we/they have sung. He/she/it has sung.
Sing
Sang
The past perfect tense is had sung.
The present perfect is 'I have sung'
Have /has sung He has sung his last song. They have sung all the songs
Sang is the past tense of sing. The present perfect tense of sing is I/We/You/They had sung; He/She/It has sung.
The future perfect tense of sing is "will have sung."
It is "had sung".
The future tense of "sung" is "will have sung." In English, the future perfect tense is formed by using "will have" followed by the past participle form of the verb. So, in this case, "sung" is the past participle form of the verb "sing," and when combined with "will have," it creates the future perfect tense.
sang, not sung. "I sang a song" is correct, but "I sung a song" is not. You would say "I have sung a song", which is present perfect tense.
past tense
The past tense of "sing" is "sang" and the past participle is "sung".
I sang I have sung is the present perfect tense. You would not say, "I sung the song well."
has been sung / have been sung. All the songs have been sung. The song has been sung
Passive is formed with be + past participle.eg was sung or were sung -- past.The anthem was sung before the game.The songs were sung with gusto.
The past tense of "indicate" is "indicated."