has - been同義轉換
來源：魅力女性吧 2.19W
同義轉換: has gone
has been 去過（人已經回來了）has gone 去了（人還沒回來，人在那邊）
He has been to Beijing.
他去過北京.（現在不在北京）He has gone to Beijing.
他去了北京.（現在人在北京）
The water has gone cold.
水已變涼。
The offer has been withdrawn.
那個報價已經撤銷了。
He has been in Beijing for 10 years. =He has been in Beijing since10 years ago.
