完成时态

动词必须用现在完成时态

The verb must be in the present perfect tense

学习使用过去完成时态。

Learn to express something with Past Perfect Tense .

如果所谈论的事情完全发生在过去，则用过去时态（有时也叫做未完成时态），例如：IusedtoliveinSeattle/我过去住在西雅图。

If you are talking about something that is completely in the past , you use the Past Tense ( sometimes called the Imperfect ), e.g.

他想知道在什么情况下需要用完成时态。

He wants to know what situation calls for use of the perfect .

（语言学）属于或关于动词的过去完成时态的。

( linguistics ) of or relating to the pat perfect tense of verbs .

用括号里动词的现在完成时态来填充空格。

Fill in the blanks with the present perfect tense of the verbs in brackets .

反应堆压力容器的壳体，历来是用成型钢板焊接而成的。（用“历来”表示完成时态）

The shell parts of reactor pressure vessels have been fabricated with formed plates welded together .

重写以下的句子，并用括号里动词的将来完成时态。

B.Rewrite the following sentences , using the future perfect tense of the verbs in brackets .

掌握现在完成时态以及不规则动词的过去时态和过去分词。

To grasp the Present Perfect and the Irregular verbs ' past tense & past participle tense .

试用括号里动词的过去完成时态或一般过去时态来填充空格。

B.Fill in the blanks with the past perfect or simple past tense of the verbs in brackets .

我们可以用过去完成时态来谈论在过去某个时间之前完成的动作。

We can use the past perfect tense to talk about an action that happened before another action in the past .

我们经常用现在完成时态来说新闻：尤其常见于报道、信函、会话。

We often use the present perfect to give news : it is especially common in reports , letters and conversations .

我们用将来完成时态来形容一个在未来特定的一个时间已经完成的动作。

We use the future perfect tense to talk about an action that will be completed at a given time in the future .

现在完成时态是中学英语语法中的重点和难点，经常给师生带来困惑。

As one of the most important and confusing grammatical tenses in high-school English , present perfect tense brings about much perplexity to both teachers and students .

本研究旨在探究母语为汉语的学生在习得英语现在完成时态时，其过渡语中母语时体特征的表现方式、存在原因和发展趋势。

The present study aims to explore how Chinese temporality influences the acquisition of English present perfect tense , why the influence sustains and what tendency will be shown in the learning outcomes of learners at different proficiency levels .

被动语态无将来进行或完成进行时态。

The work will have been finished next Monday .

我们用将来完成进行时态来形容一个行动在未来特定的时间里已进行多久了。

We use the future perfect continuous tense to talk about how long an action will be going on at a future time .

我们用过去完成进行时态来形容一个在过去开始的行动，这个行动持续到过去的另一个时间。

We use the past perfect continuous tense to show that an action started in the past and continued up until another time in the past .

表示已完成动作的时态。

The aspect of a verb that expresses a completed completed action .

一种用来表达现在已经完成的动作的完成时态。

A perfective tense used to express action completed in the present .

我已经完成了是现在完成时态的一个例句。

` I have finished ' is an example of the present perfect .

一种用来描述将来将要完成的动作的完成时态。

A perfective tense used to describe action that will be completed in the future .

现在完成时和过去时之间的差别分析起来有点复杂和困难，语法的已知规则总不是很明白或精确。在许多欧洲语言里，有现在完成时态；

The differences between the present perfect and the past simple are complicated and difficult to analyse , and the rules given in grammars are not always very clear or accurate .