As of Greek mythology, Calypso has not seen another man since Odysseus left her island of Ogygia around 20 years ago. This encounter is depicted in Homer's "Odyssey."
Since the first pokemon.
Since the first zombie was seen. That was in the 1800s.
Five years .
It had been about eleven years since Pip had last seen Joe and Biddy when he returned from abroad.
Drought has usually been a problem for dry areas. But it has been a problem since the beginning of whenever drought was first seen
Since is used to specify or define a period of time. For example, "I have been writing this since yesterday night". "Since" in this sentence suggests that he has been doing it right from yesterday night. He has not done anything else. Or, "I haven't seen Marcy since Tuesday." In this sentence, the word "Since" suggests that the speaker has not seen Marcy from Tuesday. This means that the speaker has last seen her on Tuesday and not after that. Thus, it defines a period of time, i.e., for how long an action is being done or has been done and the like.
George McCrae who had a massive hit with Rock Your Baby
Pronouncing been as bin is actually "bad" English. The verb been is the past participle of be, and it is properly pronounced with the long 'e' sound. The word, which has been (long 'e') around since at least 1010, and in common usage is frequently pronounced as bin instead of with the long 'e' sound.
she was hesitant because it's been so long since she's seen him, she's not sure of its really him or not.
since
There is no first person to have seen the moon. The moon is plainly visible in the night sky and has been since long before there were people.
Since is used to define a period of time. * I haven't seen Fred since Thursday. * It's been a long time since I last ate a doughnut. * Since you left, I've been very upset. Al these denote a span of time from some point in the past up to the moment the speaker is speaking.