Hello
who can explain to me what is the difference between /id/ and /d/ and /t/
it’s for after tomorrow, it’s an exam
and u !

The ending -ed we use to construct past tense can be pronounced in three different ways:

If the verb base ends with a voiceless sound (those are p, f, k, s, sh, ch, th), the -ed ending is pronounced as /t/. Example: worked is pronounced as /wɜːkt/If the verb base ends with a voiced sound (b, v, g, z, j, th, l, m, n, r), we pronounce -ed as /d/. For example: returned is pronounced as /rɪˈtɜːnd/Finally, if the verb base ends with d or t, we pronounce -ed as /id/. For example, start is pronounced as /startɪd/.

What do you mean determine? answer in comment section.