reason

1、reason 理由、推理：出自拉丁 rērī「思考、算一算」，它的名词 ratiō 既管推理又管计算，走到古法语成了 raison。
2、同一支分两条路：ratio(比例)、rate(比率)走「算」，reason、rational(理性的)走「想」；read(读)也挂在这个老词根上，读就是心里过一遍。
3、cause 是导致事情发生的那一下，reason 是讲得出道理的那条理由：the reason why…

reason 原因，理由，推理，推论

来自古法语 raison,原因，理由，思考，来自拉丁语 rationem,思考，考虑，动机，来自 PIE*rei, 思考，辩理，词源同 rate,read.

reason

reason: [13] Reason, together with rational, represent in English the ‘thinking’ aspects of the Latin verb rērī (it also meant ‘calculate’, and in that guise has given English rate, ration, etc). From it was derived the noun ratiō ‘thinking, calculation’ (source of English ratio and the rest). This spawned a Vulgar Latin variant *ratiōne, which passed into Old French as reisun – whence English reason.
=> rate, ratio, ration

reason (n.)

c. 1200, "intellectual faculty that adopts actions to ends," also "statement in an argument, statement of explanation or justification," from Anglo-French resoun, Old French raison "course; matter; subject; language, speech; thought, opinion," from Latin rationem (nominative ratio) "reckoning, understanding, motive, cause," from ratus, past participle of reri "to reckon, think," from PIE root *re(i)- "to reason, count" (source of Old English rædan "to advise;" see read (v.)).

Meaning "sanity; degree of intelligence that distinguishes men from brutes" is recorded from late 13c. Sense of "grounds for action, motive, cause of an event" is from c. 1300. Middle English sense of "meaning, signification" (early 14c.) is in the phrase rhyme or reason. Phrase it stands to reason is from 1630s. Age of Reason "the Enlightenment" is first recorded 1794, as the title of Tom Paine's book.

reason (v.)

early 14c., resunmen, "to question (someone)," also "to challenge," from Old French raisoner "speak, discuss; argue; address; speak to," from Late Latin rationare "to discourse," from ratio (see reason (n.)). Intransitive sense of "to think in a logical manner" is from 1590s; transitive sense of "employ reasoning (with someone)" is from 1847. Related: Reasoned; reasoning.

1. I really don't see any reason for changing it.

我真的不明白为什么要改变它。

2. There's a reason why women don't read this stuff; it's not funny.

女人不读这种东西是有原因的，它并不好笑。

3. To an extent, that is the reason for the meeting.

在某种程度上，那就是召开这次会议的原因。

4. The reason women are drinking is just because they like it.

女人喝酒只是因为她们喜欢喝。

5. The boss retains enormous influence by reason of his position.

老板由于自身的地位而一直有极大的影响力。

【argue, reason, discuss, dispute, debate, quarrel】
这组词都有“辩论，争论，说理”的意思，其区别是：
argue: 指提出理由或证据为自己或自己一方的看法或立场辩护，着重说理、论证和企图说服。
reason: 指据理力争以说服对方或求得对问题作更深入的研究。
discuss: 最常用词，指就某一或某些问题表明观点、看法等，以便统一认识，解决问题。
dispute: 侧重对分歧进行激烈或热烈的争论或争辩，带一定感情色彩，常隐含“各持已见”或“争论不休”意味。
debate: 侧重指意见等对立的双方之间正式或公开的争辩。
quarrel: 指两人之间或两个团体之间不友好的、吵吵嚷嚷地大声争论某事，尤指“吵嘴、吵架”。

【cause, reason, excuse】
这组词都有“原因”的意思，其区别是：
cause: 指直接导致事情发生的原因，与所发生的事个有因果关系。
reason: 强调指从逻辑推理上得出的结论性原因，不是直接说明起因。
excuse: 指为自己辩解，希望得到谅解时所提出的种种理由，是借口性的理由。

【think, reason, muse, speculate, meditate, deliberate, reflect】
这组词都有“思考、判断、思索”的意思，其区别是：
think: 一般用词，指开动脑筋形成看法或得出结论的脑力活动。不着重结论是否正确，见解是否有用。
reason: 指根据资料、证据或事实进行推断，作出结论或判断的逻辑思维活动。
muse: 通常指漫无目的地猜想。
speculate: 指推论过程，隐含在证据不足的基础上作出推测或设想。
meditate: 语气较强，指认真地长时间集中精力进行思考。
deliberate: 指缓慢、按部就班地作仔细而认真的思考或判断。
reflect: 指回想或回顾，侧重认真而冷静地反复地思考某个问题，尤指对已发生事情的思索。