既是,属于中国汉语词语,是一种连词,表示既然的意思。既是,连词,用在并列复句的上半句, 与“又是”组成并列复句。例如,这个广场既是开会的场所,也是休闲的场地。既然 since; as; now that:~他不愿意,那就算了吧.Since he doesn't want to do it,let's not force him.同义词:既然 投稿