sharpen的名词英文

prep = 介系词；前置词，preposition的缩写 pron = 代名词，pronoun的缩写 n = 名词，noun的缩写 v = 动词，兼指及物动词和不及物动词，verb的缩写 conj = 连接词 ，conjunction的缩写 s = 主词 sc = 主词补语 o = 受词 oc = 受词补语 vi = 不及物动词，intransitive verb的缩写 vt = 及物动词，transitive verb的缩写 aux.v = 助动词 ，auxiliary的缩写 a = 形容词，adjective的缩写 ad = 副词，adverb的缩写 art = 冠词，article的缩写 num = 数词，numeral的缩写 int = 感叹词，interjection的缩写 u = 不可数名词，uncountable noun的缩写 c = 可数名词，countable noun的缩写 pl = 复数，plural的缩写

give - give/gift/giverspeak - speakerknow - knowledgeenter - entryoperator - operateinformal - informalityinvite - invitationdecided - decisionwin - winninglive - lifewiden - widened / widecare - care (n.) - careful /careless (adj.) - carefully/carelessly (adv.)thank - thankfuluse - useful ( adj.) - usefullyyouth - youngsave - save / savingsharpen - sharpeningtrue - truthdead - death ( n.) - die (v.)happy - happinesscloud - cloudydanger - dangerousfun - funny

我的建议： air 复数形式(此词为不可数名词）但是有特殊情况，像前面的朋友回答的put on airs,为固定搭配。过去分词：后缀-ed.clean-cleans-cleanedempty-empties-emptied(因为最后一个音节为元音因素，改Y为I再进行相对应的词性转化）sharpen-sharpens-sharpenedturn-turns-turnedwater-waters-wateredrepair-repairs-repaireddust-dusts-dustedcorrect-corrects-correctedshut-shuts-shut(这个动词为不规则变化，过去式和过去分词同行）That's all for my suggestion.Tks!!