"现在完成时"是个多义词，它可以指现在完成时（英语术语）,现在完成时（纪录片）。
Level 4至Level 6出现的动词时态形式，以现在完成时(present perfect)、现在完成进行时(present perfect continuous)、过去完成进行时(past perfect continuous)为主，句子结构大部分是符合句(compou...
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... Präsens (Gegenwart) 现在时 Perfekt (vollendete Gegenwart) 现在完成时 Präteritum (Vergangenheit, Imperfekt) 过去时 ...
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... 一般将来时 future simple tense 现在完成时 past perfect tense 过去完成时 present perfect tense ...
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现在完成时的形式 Forms of the Present Perfect
现在完成时的含义 Meanings of the Present Perfect
用于现在完成时 so far
现在完成时的被动语态 the present perfect passive voice ; has been kidnapped ; has been done
现在完成时的用法 Now when the complete usage ; Now completes when usage ; Present perfect usage
虚拟式现在完成时 Perfecto Compuesto del Subjuntivo
现在完成时过去完成时 I knew that he had finished reading this book
常用于现在完成时态中 so far
例四现在完成时 Present Perfective Aspect
现在完成时在第8单元讲解。
I have eaten是动词eat的现在完成时；I had eaten是过去完成时；I will have eaten是将来完成时。
'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.
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.
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