... Past Continuous 过去进行时 Present Perfect Simple 现在完成时 Present Perfect Continuous 现在完成进行时 ...
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present perfect and past simple 目前完善和过去简单的 ; 现在完成时和过去简单 ; 目前和过去简单完美
Simple Present Perfect Tense 现在完成时
Past Simple vs Present Perfect 一般过去时和现在完成时
The present perfect simple is often used to talk about past actions and events which are completely finished.
一般现在完成时经常用于谈论过去的行为和事件其完全结束。
At first glance it looks as if there is no element of "present involvement" in this use of the present perfect any more than in the simple past.
乍看起来，在现在完成时的用法中，似乎跟在一般过去时中一样，都没有“涉及现在”的因素。
The English stative passive voice sentences can be the simple present, the simple past, the present perfect or the part perfect.
英语状态被动语态句型结构可以是一般现在时、一般过去时、现在完成时或者过去完成时。
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