的过去式

But he is a bogeyman from a bygone age.

但是现在有关自由市场的一切都是过去式了。

One dalliance with a nanny and plenty of tabloid ink later, they were kaput, but somehow they found their way back to each other last year.

在调戏保姆之后，他们成了过去式，但去年他们却找到了回到对方的方式。

The past tense of spit "expectorate" is spat in BrE, spit or spat in AmE.

过去式的垃圾"吐"是吐口水是BRE ，吐痰或吐在AmE 。

And its connection to the past, present, and future tense.

这段关系涉及的过去、现在及未来式

And, that all in all, it is only the past tense, have passed - pass.......

而，那一切的一切，也仅仅是过去式，已经过去了——pass。。。。。。。

Present tense simple, present tense progressive, past tense simple, past tense progressive, present perfect, past perfect.

目前的紧张简单，目前紧张的进步，过去式简单，过去紧张的进步，目前十全十美的，过去的完美。

In this thesis, we have proposed the algorithms of performing of three improving types, can improve the efficiency of prospecting of the unusual fluctuation database , so the improvement type of a thesis performs algorithms and will not need to rescan the whole database each time when there are newly-increased materials, the majority only needs to scan the newly-increased trade materials, in order to improve the efficiency of prospecting.

在本论文中，我们提出了三个改良式的演算法，第一个为Apriori演算法来动态探勘，其二为使用布林演算法为基础进行动态探勘，最后为以布林运算为基础之FP-tree的动态探勘，可以提升异动资料库的探勘效率，因为在过去的资料探勘技术中，在探勘关联规则的过程}式演算法当有新增资料时将不用每次都要重新扫描整个资料库，绝大部分只需要扫描新增的交易资料，以提升探勘效率。

In this thesis, we have proposed the algorithms of performing of three improving types, can improve the efficiency of prospecting of the unusual fluctuation database , so the improvement type of a thesis performs algorithms and will not need to rescan the whole database each time when there are newly-increased materials, the majority only needs to scan the newly-increased trade materials, in order to improve the efficiency of prospecting.

在本论文中，我们提出了三个改良式的演算法，第一个为Apriori演算法来动态探勘，其二为使用布林演算法为基础进行动态探勘，最后为以布林运算为基础之FP-tree的动态探勘，可以提升异动资料库的探勘效率，因为在过去的资料探勘技术中，在探勘关联规则的过程中，若有新增或删除交易资料时，则必须重新计算一次，将造成前次探勘计算的重复及资源的浪费，所以本论文的改良式演算法当有新增资料时将不用每次都要重新扫描整个资料库，绝大部分只需要扫描新增的交易资料，以提升探勘效率。

Why did you come back home instead of staying at school yesterday evening?—The teacher told us that we externs didn't need to stay at school in the evening.

例句中所指的事是发生在过去的真实情况，所以只能用实义动词need的过去否定式来表示。

He was going to throw the book at me.

这里hit的意思是&打&。hit是个不规则动词，原形动词和过去式以及过去分词都是同一形式：hit。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。