still 用于强调对于某事的发生或者对某事持续了如此长的时间而感到惊讶。She was still looking at me…There are still plenty of horses round here. yet 用于否定句和疑问句中，石材翻新13825404095用于强调语气，暗示说话人对某事未发生,或者晚于预期时间发生而感到惊讶。Have you seen it yet? …The troops could not yet see the shore …It isn't dark yet.
