Learn to express something with Past Perfect Tense.
学习使用过去完成时态。
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。
'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.
Ihave eaten是动词eat的现在完成时；Ihad eaten是过去完成时；Iwill have eaten是将来完成时。
B. Fill in the blanks with the past perfect or simple past tense of the verbs in brackets.
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。
When you ask about something that started in the past but continues to the present time, you use the Present Perfect tense, e.g.: I’ve been there for 5 years / I’ve been there for 5 years.
当你谈论在过去开始但是一直持续到现在的某事时，用现在完成时态，例如：I’vebeentherefor5years/我在那里已经5年了。
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。
We use the present perfect tense to talk about something that happened at an indefinite time in the past.
我们使用现在完成时谈论发生在过去某个不确定的时间的事情。
So you learn the past tense and then two or three weeks later, oh now you are learning the present perfect, and then a few weeks later, you are learning the future, that's crazy.
你学习了过去时，然后两到三周后你开始学习现在完成时，几周以后你又开始学习将来时，这简直太疯狂了。
To grasp the usage of the tenses, including the present, past, future tense and continue, perfect tense.
掌握现在时，过去时，未来时， 进行时， 完成时的各种用法。
We use the present perfect tense to talk about things that started in the past and still have some connection with the present.
我们用现在完成时来谈论在过去开始并且仍与现在有联系的事情。
In English learning, it is difficult for learners to master the tense, especially the past tense and the present perfect tense.
英语学习中，时态的学习和运用对学习者尤其中低水平学习者来说是一个困难之处。
There are three kinds of shapes of the tenses in the Utopia Novels of the later Qing Dynasty: the future past tense, the future perfect tense and the future continuous tense.
晚清的乌托邦小说在时间构形上通常表现为“将来过去时”、“将来完成时”和“将来进行时”等三种不同面相。
In this case, the past or present perfect tense should be used according to the grammatical rules of common English.
若按普通英语的动词时态规则，就得用一般过去时或现在完成时。
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。
To grasp "the Present Perfect" and the Irregular verbs' past tense &past participle tense.
中文意思：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…
Comparison Compare the difference between the simple past tense and the present perfect tense.
现在完成时与一般过去时所表示的动作或状态都发生在过去，区别…
The second function of the present perfect continuous tense is to talk about an action that started in the past and it is still happening.
第二种：谈论一个起始于过去，但是现在仍在发生的动作。
We use the present perfect tense to talk about an action that started in the past and continues to the present.
我们用一般过去时谈论发生在过去的动作和事情。
We use the present perfect tense to talk about an action that started in the past and continues to the present.
我们用一般过去时谈论发生在过去的动作和事情。
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