has been是现在完成时。
例句:
the original manuscript has been lost
原稿已经遗失。
he has been late on numerous occasions
他已经迟到过无数次了。
扩展资料。
a peaceable settlement has been reached
已经实现和解。
the gene for asthma has been identified
哮喘病的基因已被识别。
since 1977 otter hunting has been illegal
捕猎水獭1977年以后就被列为非法了。
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has been是什么时态[朗读]
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