about to do的用法和样例：
- The meeting was coming to a close.
- It is my painful duty to tell him he is dying.
- He came just as the bus was about to leave.
- But before he could do anything, his guest spoke.
about to do的相关资料：
About Ag about about/in doing characteristic of About this lovely one-night stand About our staff working backstage. About complex index of refraction. About Northern prairie system weapon About Elise cross stitch's pattern. About talented person's understanding About the Assets Depreciation Reserve About Lighting Design for Supermarket About nine-thirty in the morning.