时态

It is only through language and, perhaps through music, that man can make free of time, that he can overcome momentarily the presence and presentness of his own punctual death.

对于语言的时间性问题， Steiner 认为无论你使用何种时态，你的话语都是现在的行为；你阅读古代的典籍时候，你会发现自己越来越成为一个翻译家。

There are three tenses, present, preterite and permansive.

有三种时态：现在、过去和一般现在时。

As to dynamic modality, it can always be hypothesized in a conditional protasis, is always subject to tense distinction, and does not shift its orientation under the influence of interrogation.

机能情态总是客观的，可以出现在条件句中；受到时态的影响；不会因为疑问而转移方向，指向受话者。

Important advance are made in the date of slices and superslices:(1) Abundant acritarch and a few radiolarian fossils are collected in the "barren strata" formed by epi-middle metamorphic slices at Gouli, Longshigenggongwu, thus provide data evidence for this set of strata. A series of isotopic dating data (14) showed that the date are between 1 000 Ma and 500 Ma, close to that of the fossils.

在岩片和超岩片时态调查方面取得如下重要进展：(1)在沟里、龙什更公坞等地区的由中浅变质岩岩片构成的"哑地层"中获取较丰富的疑源类和少量放射虫化石，使该套地层从化石方面首次获得了确切的时代证据，并新获一大批同位素年龄数据（14个），年龄值主要分布在1000—500Ma之间，化石时代与同位素测年吻合较好。

It was what they had been working so hard to find: pure radium.

这句话中"had been working"是什么时态？具体用法是什么？

N this paper, a new method for theorem proving of PTL based on constructing semantic refutation tree is presented.

本文通过对近10年命题时态逻辑定理证明方法的研究，提出了一种新的证明方法，前人的工作基于对公式的现时部分和后时部分的分解，本文的工作是基于语义反驳树构造。

He told the student aloud that the regular verb was in the present tense.

他大声告诉学生，这个规则动词用的是现在时态。

The regular verb was in the present tense.

这个规则动词用的是现在时态。

B: Reported speech with tense changes.

改变时态的间接引语。

When he grew up, he worked as a sailor on a riverboat for some time and therefore he got his pen name, Mark Twain .

文章的时态主要用过去时，最后两句与现在有关，因此用了现在完成时和一般现在时。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。