am/is/are+being+done这个结构中为什么要being+done?
<p>问题:am/is/are+being+done这个结构中为什么要being+done?<p>答案:↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">胡世敏的回答:<div class="content-b">网友采纳 am/is/are+being+done是现在进行时的被动词语态. Thetreesarebeingcutnowadays. 加油!不明白再问!
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