2.强调时间上的对比时，往往需要加一些词。

　　(1)The old man said, "They say his father was a fisherman. Maybe he was as poor as we are."

　　老头儿说：“听人说，从前他爸爸是个打渔的。他过去也许跟我们现在一样穷。”

　　(2)I was, and remain, grateful for the part he played in my release.

　　我的获释是他成全的，对此我过去很感激，现在仍然很感激。

　　(3)The high-altitude plane was and still is a remarkable bird.

　　该高空飞机过去是现在仍然是一种了不起的飞机。