perfect tense的例句大全

There is no exactly equivalent French tense to the present perfect tense in English.

法语里没有和英语中的现在完成时完全对应的时态.

Discuss what has changed in the last twenty years in Guangzhou past tense and perfect tense.

学生四人为单位进行小组讨论,写下与广州的变化有关的关键词.

The present perfect tense emphasizes the effect of the past action on the present.

现在完成式强调过去所发生的事情对现在的影响.

Sum up the new vocabulary in this Unit, and Present Perfect Tense.

明确本单元所学的词汇和语法,增强他们正确操作的能力.

The tense is present perfect progressive.

进行时)(现在,过去,将来,现在完成-进行时 )

Learn to express something with Past Perfect Tense.

学会描述过去所发生的事情.

The present and past perfect tenses both belong to the perfect tense.

现在完成时和过去完成时都属于完成时态.

Explain and illustrate the main use of the present perfect tense.

解释并举例说明现在完成时态的用法.

Explaining some topic already obtained uses present perfect tense.

说明某个课题现在已经取得的成果,适宜采用现在完成时.

To grasp the usage of the present perfect tense.

掌握现在完成时态的用法.

Here have is the auxiliary verb and completed is the main verb; have completed is the present perfect tense.

在这里have是辅助动词而completed是主要动词，have completed是现在完成时。

The action that happens second is often in the past simple tense. In this example: I arrived. When you want to talk about two past actions, one which happened before the other, remember to use the past perfect for the first action, and the past simple for the second.

当一句话中有两个在过去不同时段发生的动作时，先发生的动作使用过去完成时，而后发生的动作则常用一般过去时。

They were all concerning about the past tense and the present perfect.

那些练习题都是跟一般过去时和现在完成时有关的。

A Semantic Study of the English Simple Past Tense and the Present Perfect

实话英语的时态一般过去时和现在完成体的语义研究

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

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。