possibly

maybe, perhaps, possibly, probably

这些副词均有“或许、大概”之意。
maybe: 普通用词，美国英语多用，指某事也许如此，含不能确定意味。
perhaps: 普通用词，多用于英国，与maybe同义。
possibly: 指客观上潜存着发生某种变化的可能。
probably: 一般指根据逻辑推理，估计有发生的可能，把握性较大，语气比possibly强。

副词 possibly:

1. by chance
   同义词：perchance, perhaps, maybe, mayhap, peradventure
2. with a possibility of becoming actual
   同义词：potentially
3. in a manner or to a degree possible of conceiving
4. to a degree possible of achievement or by possible means

1. I don't know how I can possibly thank you enough.
   我不知道该怎样来感谢你才好。
2. I can't possibly lend you so much money.
   我没有可能借给你这麽多钱。
3. She was possibly the greatest writer of her generation.
   她也许是她那时代最伟大的作家。
4. I'll do all I possibly can.
   我将尽我的可能去做。
5. Could you possibly lend me 10 dollars?
   你能借给我十美元吗？