被å¨å¥çç»ææ¯ä¸»è°ç»æã
the workers build a house. ä¸»è¯ the workers è°è¯ build å®¾è¯ a house
A house is built (by the workers). ä¸»è¯ a house è°è¯ is built (è¡¥è¯ by the workers)
被å¨è¯æä¸ï¼è°è¯çç»æå°±æ¯ be doneï¼è¿ä¸ä¸»ç³»è¡¨æ²¡å
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ä¾åèã