| 词汇 | must |
| 词根词缀 | 词源： must (v.) O.E. moste, pt. of motan "have to, be able to," from P.Gmc. *motanan "to fix, allot, appoint, to have room, to be able" (cf. O.Fris. mota, M.L.G. moten, Du. moeten, Ger. müssen "to be obliged to," Goth. gamotan "to have room to, to be able to"), from PIE base *med- "to measure." Used as present tense from c.1300, from the custom of using past subjunctive as a moderate or polite form of the present. The noun meaning "something that has to be seen or experienced" is from 1892. must (n1.) "new wine," O.E. must, from L. mustum, short for vinum mustum "fresh wine," neut. of mustus "fresh, new." must (n2.) "mold," c.1600, perhaps a back-formation of musty (q.v.). must (n3.) "male elephant frenzy," 1871, from Urdu mast "intoxicated, in rut," from Pers. mast, lit. "intoxicated," related to Skt. matta- "drunk, intoxicated," pp. of madati "boils, bubbles, gets drunk," from PIE base *mad- "wet, to drip." 词根记忆： aux.&v.必须;很可能;一定要n.必须做的事I must go now.我得走了. |
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