Younger writers use more negative and past-tense words than older writers who use more positive and future-tense words.
年轻作家使用更多的否定式和过去式词汇，而年长的作家使用更多的肯定式和未来式词汇。
2
If a language has no futuretense, for instance, its speakers would simply not be able to grasp our notion of future time.
譬如，如果一种语言没有表示未来时态这一概念，说话人理所当然地，就无法抓住未来时间的这一理念。
3
A knowledge engineer documents the issues and alternatives, writing in the futuretense and a tone that a technical mentor would choose in a personal conversation.