用现在完成时的被动语态改写下列句子。
Rewrite the following sentences using the present perfect passive voice.
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。
We use the present perfect tense to talk about things that started in the past and still have some connection with the present.
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。
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.
用动词的正确形式将下面的句子变成现在完成时的被动语态。
Change these sentences into the present perfect passive putting the verbs into the correct forms.
下面的这些句子摘自课文，仔细地研究这些例句，特别要注意现在完成时句子中表示时间的状语（用斜体印出）。
These sentences are from the passage. Study them carefully. Pay close attention to the words in italics.
用动词的正确形式将下面的句子变成现在完成时的被动语态。
Change these sentences into the Present Perfect Passive, putting the verbs into the correct forms.
用动词的正确形式将下面的句子变成现在完成时的被动语态。
Change these sentences into the Present Perfect Passive, putting the verbs into the correct forms.
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