✔ 最佳答案
since---adv,prep, conj (with the present tense or with have or had) between a point in the past and now
eg:-(1)Jerry has known (or met) the girl since (he was) 8 yrs old.
eg:-(2)He has known現在完成式 the girl (ever) since--------(they met)連用或不用.
謝謝赞美由於(ever) since.....