work extra hard 中hard是什么词性?请十分确定的人的回答

work extra hard 中hard是什么词性?请十分确定的人的回答 I ____ at Chinses and my Chinses teacher says I am a ____ student.A.work hard ,hard-working.B.har he used to( devote himself to work) hard.这种说法好像不对?只能he used to be devoted to working har He__(not mind)__(do)extra work for us since he__(be)so hard-working.要解析 work hard 和hard work这两个短语中hard分别做什么词性? Work hard work hard work hard at hard play hard-work hard work work hard Work Hard,Play Hard 歌词 work hard in还是work hard at? “work hard”和“hard work”的区别. work hard in 还是work hard on hard work,work hard 有什么区别? he works hard.中work为什么加s? work hard?work smart?翻译 is such _____that you must_____on itA.hard work,work hard B,a hard work,hard work C.hard working,work hard D.work hard ,work hard