Ane (姉) means "my older sister." This term is used when you are speaking about your own older sister to someone outside of your family. When addressing your older sister directly, or when referring to someone else's older sister, the polite form "oneesan" (お姉さん) is preferred. Example: 私の姉は英語が上手です。(Watashi no ane wa eigo ga jōzu desu.) = My older sister is good at English.

自分の姉を、家族以外の人に話す時に使います。例：私の姉は英語が上手です。