如果他死了，必定是火葬。(主句是过去式的被动语态)。

If he died, he was surely cremated.

读英文，学习文法，要学好过去式，现在式和未来式。

Reading in English, learning grammar, to learn of the past, present tense and future tense.

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。

Younger writers use more negative and past-tense words than older writers who use more positive and future-tense words.

对于像斯特劳斯这样依靠信用卡生活的人来说他们急需工作却根本找不到，美国梦是过去式而不是将来式。

For Strauss, living on credit, desperate to work, but with no job in sight, that dream looks a thing of the past, not the future.

高端茶走俏的时代已经是过去式了，抑制三公消费已是不争的现实，这对一味追求高端的茶企无疑是巨大的危机。

The high-end tea popular era is gone, inhibition of Official business expenses is an indisputable reality, the pursuit of high-end tea enterprises is undoubtedly a huge crisis.