ago

ago, before

形容词 ago:

1. gone by; or in the past
   同义词：agone

副词 ago:

1. in the past

1. It happened quite some time ago.
   那是很久以前的事。
2. They were supposed to be here an hour ago.
   他们应该在一小时以前到达这里。
3. The population has increased from 1.2 million 10 years ago to 1.8 million now.
   人口从10年前的120万已增加到现在的180万。
4. All that happened many moons ago.
   那一切都发生在很久以前。
5. There were lots of buffaloes in the North America 100 years ago.
   100年前，北美有大量的野牛。
6. Long ago enormous animals lived on the earth.
   很久以前，地球上生活着巨大的动物。
7. He joined the army a year ago.
   一年以前，他参军了。
8. He came here two years ago.
   他两年前来到这里。