Definition
To be on the point of doing something when one is interrupted.
正要做（被打断）
He made to speak when the phone rang.
他正要说话时，电话响了。
I made to go out when it started to pour.
我正要出去时，突然下起了大雨。
She made to reveal the secret, but then suddenly stopped.
她正要揭开秘密，但突然停了下来。