時制
先行研究のレビュー時
A scientist writes in the past tense when referring to his/her own experiment. The present tense is used when referring to another investigator’s published work as background information.
(from http://www.fairfieldschools.org/wardehs/cwardehs03/sciwriting.htm)
Results described in your paper should be described in past tense (you’ve done these experiments, but your results are not yet accepted “facts”). Results from published papers should be described in the present tense (based upon the assumption that published results are “facts”). Only experiments that you plan to do in the future should be described in the future tense.
(from http://www.sci.sdsu.edu/~smaloy/MicrobialGenetics/topics/scientific-writing.pdf)
Write in the past tense. You are writing about information that was discovered in the past. Many journal editors allow authors to write in present tense when dealing with what are referred to as "continuing situations", i.e., it was true in the past, is true presently and will be true in the future. There is some latitude for this in the introduction where you are describing the general status of your topic but when you are writing about the articles that you have found to up-date the topic, write in the past tense.
(from http://it.stlawu.edu/~tbudd/litrev.html)
Refer to work done by specific individuals (including yourself) in past tense. Refer to generally accepted facts and principles in present tense.
