in virtue of ／on account of/by right of怎么区别

virtue 本身有美德的意思，所以A by virtue of B,常常表明 A的结果的出现“多亏是”有B。比如The winner will become premier by virtue of the party's majority in parliament's lower house 多亏 党员在下议院中占大多数，获胜的人将担任总理。
on account of 表示“考虑到”，“因为”等，没有明显的情感倾向。比如 On account of your health, you must endeavour to shift off the care of your children. 考虑到你的健康状况，你必须放下照看孩子的重任。