ç°å¨å®ææ¶ç被å¨è¯æçè¯å®å¼ä¸ºï¼have/ has +been +doneãå¦ï¼
The experiment has been done successfully. è¿ä¸ªå®éªåå¾å¾æåã
ç°å¨å®ææ¶ç被å¨è¯æçå¦å®å¼ä¸ºï¼have/ has +not +been +doneãå¦ï¼
Tomâs novel has not been published. 汤å§çå°è¯´è¿æ²¡æ被åºçã
ç°å¨å®ææ¶ç被å¨è¯æçä¸è¬çé®å¥éå°have /hasæå°ä¸»è¯çåé¢ãå¦ï¼
Has his bike been repaired? ä»çèªè¡è½¦ä¿®å¥½äºå?
ç°å¨å®ææ¶ç被å¨è¯æçç¹æ®çé®å¥ä¸ºï¼çé®è¯+have /has +been +done? å¦ï¼
Who has been invited? è°åå°äºé请?
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