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- Come back before it is dark. 在天黑前要回来。
- Now is the time for you to pull back before it is too late. 现在是你悬崖勒马的时候了。
- If you speed up your work, we can finish before it is dark. 要是你加紧, 我们可以在天黑前结束工作。
- You call me when you come back.Don't forget to come back before February 14 when the market is opened and buy me something for it is Valentine's Day. 别忘了二月十四日之前一定要赶回来，那天股市开市，还有，别忘了给我情人节礼物。’
- I'll come back before you know it. 我很快就回来。
- The children won't come home until it is dark. 孩子们不到黑天不回家。
- It's a shame that you had not come back before I left. 真遗憾，我走之前你没有回来。
- It's a shame that you have not come back before I leave. 真遗憾，我走之前你没有回来。
- It is impossible for a dead animal to come back. 死了的动物是不可能复活的。
- Come back before six if you can. 如果可能，请你6点钟前回来。
- It is a relief to hear that he will come back soon. 听说他马上要回来真叫人欣慰。
- It is dark and I can see nothing. 天很黑，我什么也看不见。
- Linda, can't you come back before nine? 琳达，你不能在9点钟之前回来吗?
- It is dark as midnight it the cellar. 地窖里漆黑如夜。
- It is coming in foggy; we had better get home before it thickens. 现在开始起雾了，我们最好赶在雾浓前回家。
- Gee, I can hardly wait till it is dark. 哎呀，我简直等不到天黑了。
- I couldn't see myself coming back before noon. 我认为我午前不可能赶回来。
- It is dark and gloomy in the small room. 小屋非常晦暗。
- You can go out on condition that you come back before 8 o'clock. 只要你能在8点以前回来,你可以出去。
