on a regular basis

規則的にと言う意味ですが、意味が問題ではなくon a (名詞) basisという形がここでは重要です。参考書にも辞書にもありませんが、一般常識です。0:20

http://www.youtube.com/watch?v=p1POfZSSb0Y&feature=feedu 1:10 on a case-by-case basis
http://www.youtube.com/watch?v=cOtVfA9Ueoo 1:40 on an ad hoc basis

http://www.youtube.com/watch?v=Pit8o0GjjU8 0:53 on a daily basis
http://www.youtube.com/watch?v=6Ut1zDAafJs 1:04 on a daily basis
http://www.youtube.com/watch?v=HWZBmGrJXbk 2:38 on a regular basis
http://www.youtube.com/watch?v=adu-IxIpMLU 0:56 on an out-patient basis 外来扱いで
http://www.youtube.com/watch?v=CLEOQ4p2Exk&feature=feedu 0:43 on a voluntary basis　奉仕精神で、滅私奉公主義で
http://www.youtube.com/watch?v=OV-RCjnd4XM  0:56 does this happen in your life on a regular basis? これはよくあることですか？
http://www.youtube.com/watch?v=K6QQAnPT9so 0:23 families are struggling to get enough food to eat on a day-to-day basis.

練習問題解答
a-299 on almost a daily basis
a-1808 on a daily basis
a-3316 on a daily basis
a-5354 on a regular basis