past simple vs present perfect ・I've lost my wallet since yesterday. ・I lost my wallet yesterday. ・I have been losing my wallet since yesterday. Does the first sentence means "I lost my wallet yesterday" and " now I don't have my wallet"? Or does it mean "I have a experience of losing my wallet before"? I think the second sentence means "l lost my wallet yesterday" but "now I have my wallet or bought a new wallet or things like that", if there is just the sentence or no more following sentences. Does the third sentence mean "I lost my wallet and since then I don't have the wallet and still am looking for it now or have influences of losing the wallet"? this kind of topic,after doing google I thought, is related with if the verb is "telic" or "atelic". If there are someone knows about telic and atelic verbs or its relating things,I would like to hear the explainations. Or ,to those who undestand well about the difference past simple and the present perfect ,please give me the difference. thank you in advance.