时态

Mother often goes to the greengrocer's. She went there this morning.

她今早去菜市场已经是过去的事了，就要用一般过去时态。

Generally, it ~s difficult to establish hashing index for time value because of the time＇s indeterminacy.

由于时间的不确定性，在时态数据的时间属性上建立Hash索引比较困难。

The sea was roaring hollowly in the distance , the fields were bare and sere , scarfed with golden rod , the brook valley below Green Gables overflowed with asters of ethereal purple , and the Lake of Shining Waters was blue-blue-blue not the changeful blue of spring , nor the pale azure of summer , but a clear , steadfast , serene blue , as if the water were past all moods and tenses of emotion and had settled down to a tranquility unbroken by fickle dreams .

大海在远处咆哮空洞，田野裸露和水生植物，与戈尔登勒德斜切，下面格林盖布尔布鲁克瓦利洋溢着空灵紫菀的紫色，以及夏宁沃特斯湖是蓝色的，蓝色的蓝色；不是多变蓝春，夏季也不是蔚蓝的苍白，而是一个明确的，坚定，平静的蓝色，因为如果水是过去的一切情绪和情感的时态，并定居下来到安宁由善变梦想从未间断。

Oral English assessing section is divvied into 3 grades according to the questioning and answering ability of people being tested. And every grade contains 3 levels. Phonetic system is a tridimensional syllable list showing like coordinates with horizontal coordinates consist of vowels and vertical coordinates consist of consonants; Grammar section is made of a tense table according to the time and the state of event.

口语评定系统以被测评人的话动发起和响应能力划分为三个等级，其是每个等级又分又划分为三个子级；音标系统是分别把元音、辅音指定为横纵坐标组成一个立体的音节表；语法系统是按照时间、事件状态组成十六种时态表。

Hypertensin was determined by an indirect method.

宜改为一般现在时态。例2：血管紧张肽通过直接的办法确定。

His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

我记得很多老师讲过去完成式的时候说这个时态用在一个过去的事情发生在另一个过去的事情以前的时候用，按照此理容易选A 因为

59B 59B iceoutside His studies of ice-polished rocks in his Alpine homeland, far outside the range of presentpresent-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in whick great ice sheets had existed in now currently temperate areas.

an age + in which / when 时态问题：发生在过去的动作要用一般过去式，不能用过去完成时 now 和 currently 语意重复副词的位置：now 放在系动词，助动词的后面，普通动词的前面，以及动词短语的中间。

I think the present indefinite tense is the easiest tense of all. Do you know what it means ?

我想一般现在时是所有时态中最容易的，你知道它的含义吗？

Inflectional morphology is used to indicate number and case and tense and person etc..

屈折形态学惯于说明数、格、时态和人称等等。

Interval algebra is a tool of qualitative temporal reasoning. It is widely used in artificial intelligence.

区间代数是一种用来进行定性时态推理的工具，它在人工智能中有着广泛的用途。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了