A sentence with a line down the middle. On one side stands the thing you are talking about. On the other side is everything you say about it. Predicate is that second side — the said-about part.
可以想成一個句子從中間畫一條線。左邊站著你要談的那個東西。右邊是你對它說的話。predicate 就是右邊那一整塊——被說在它身上的東西。無論後來變成文法術語、邏輯的判斷式，還是 be predicated on，那個「說在某個東西身上」的動作都還在。
From the word’s history
From Medieval Latin praedicatum, the thing said of a subject, from praedicare (to proclaim), which is prae- (before) plus dicare (to proclaim). It is a doublet of preach.
來自中世紀拉丁文 praedicatum，意思是「被說在主詞身上的東西」，出自 praedicare（公開宣告），由 prae-（在前面）加 dicare（宣告）組成；它跟 preach 是同一個祖先分出來的。所以這個字從一開始就跟「把話說出來、說在某個對象身上」綁在一起。
Wiktionary etymology notes supplied in this packet (source_ref kaikki:3f6f69a190036ae4:153149332 and :153228357)
登入就可以看每一支怎麼連回核心畫面。