possibly; probably; perhaps; maybe
这几个副词都有“可能”的意思,用法如下：
possibly“或许；也许”,所指的可能性较小,为加强语气,可与can或could连用；与may连用,表示的可能性更小.
例如：It may possibly be true．也许是真的.
Please call me as soon as you possibly can．请尽快给我打电话.
Could you possibly tell me the answer?你能告诉我这个答案吗?
probably“很有可能；十之八九”,其语义较强,可能性较大.在否定句中,probably不能紧跟在否定词之后.例如：
It will probably be fine tomorrow．明天大概会是晴天.
译：她大概不会来这里.
正：Probably she won’t come here．
正：She probably won’t come here．
正：She won’t come here probably．
误：She won’t probably come here．
perhaps“或许”,含有“可能这样,也可能不这样”之意,其含义和用法与maybe一样,多用于口语.maybe多用于美国英语.在这几个单词中,语义最强的是probably,其次是perhaps和maybe,最弱的是possibly.例如：
Perhaps we will be late for work．或许我们上班会迟到.
Perhaps we’d better take a bus．也许我们最好乘公共汽车.
perchance [pə'tʃɑ:ns] adv.偶然；可能
比如：
He discovered the painting perchance .
他偶然发现了这幅画.
conceivably [kən'si:vəbli] adv.令人信服地；可相信地；想得到地
比如：
Conceivably,he is telling the truth for once.
说不定他就这一次说的是真话.
Thus,inhibition of this mechanism could conceivably enhance the effect of norepinephrine.
因此可以想象,抑制这种机制可以增强去甲肾上腺素的作用.