example： Though it was a very difficult job ， Helen was able to bring it off successfully ahead of schedule.
Bonus clause: Clause in a contract which provides for a Bonus to be paid to contractors or suppliers for completion of works or delivery of goods ahead of schedule, when this is Beneficial to the contracting agency.
The history of induced spawning of Chinese carps began in 1958 with the spawning ahead of schedule of ripe wild black carp and big head by investigators from the Institute of Hydrobiology, academia Sinica.
The grand targets of the National Economic Plan have been accomplished ahead of schedule.
Thanks to your help, we accomplished the task ahead of schedule.
The time allotted was a year, but they completed the project two months ahead of schedule.