since [副词] 自那时起 Ex: The restaurant opened last year , and it has been popular since . 这家餐厅去年开业,自那以来一直很受欢迎。
yet [副词] 还 Ex: The results of the experiment are inconclusive ; we do n't have a conclusion yet . 实验的结果尚无定论;我们还没有结论。
all along [副词] 从一开始 Ex: They were friends all along , despite occasional disagreements . 尽管偶尔有分歧,但他们一直是朋友。