1.The child has been mute since birth.

1.这孩子从生下来就不能讲话。

2.I have not seen him since then.

2.从那以后我再过他。

3.He has served in the navy since 1959.

3.自1959年以来, 他一直在海军服役。

4.I haven't ridden much since the accident.

4.打那次事故后我就怎么骑马了。

5.We have had incessant snowfall since yesterday afternoon.

5.从昨天下午开始就持续不断地下雪。

6.The television's been dead since the storm.

6.暴风雨过后那台电视机就坏了。

7.These letters have lain under wraps since the 1940s.

7.这些信件从20世纪40年代起就被密存了起来。

8.Politics has been a concern of philosophers since Plato.

8.从柏图起，政治就是哲学家们感兴趣问题。

9.They have been steeped in prejudice since their childhood.

9.他们从小就充满了偏。

10.Cannabis has been used for medicinal purposes since antiquity.

10.麻自远古以来就被作为药用。

11.City have been tracking the striker since the summer.

11.自夏天起，伦敦城一直都在关注罢工者。

12.The NCDC calls Mitch the deadliest Atlantic hurricane since 1780.

12.国家天气数据中心（NCDC）称“米奇”是1780年以来杀伤力最西洋飓风。

13.The antifascist urban commune exists in Berlin since early 2006.

13.反法西斯城市公社于2006年之初在柏林面世。

14.Many families are living on the dole since the strike.

14.罢工以来, 许多家庭靠失业救济金度日。

15.I haven’t seen him since the summer before last.

15.我已有两个夏天过他了。

16.Children have been routinely immunized against polio since 1958.

16.自从1958 年以来，儿童都按照常规接种防治小儿麻痹症疫苗。

17.The Barton family have lived in this village since time immemorial.

17.巴顿家族自古以来就住在这个村里。

18.Acupuncture has been used as medical means since antiquity in China.

18.针灸在中国自远古以来就被用作医疗手段了。

19.Things have been in a state of flux since father's death.

19.父亲死后事情变化不定。

20.He has kept up with a number of his old workmates since his retirement.

20.他退休以后一直和许多老同事保持着联系。