Mostly 不 means "no " Like "never " In Chinese is "絕不" (絕is ever 不is no) p.s. 絕is the short way to say "絕對" and also mean ever too 不 is the short way to say 不會 but 不會 not always mean no sometimes it mean don't know how cause 不is "no" 會is "know how" Example: I will never go to America [in Chinese]: 我(I)絕對不會(will never)去(go to)美國(American) Example2: I do not like her [in chinese]:我(i)不(do not)喜歡(like)她(her) 沒Is mostly means "don't have " Example:I don't have go to America [in Chinese]: 我（I) 沒有(don't have )去過(go to) 美國(American) Example 2: I don't have brother [in Chinese]：我（I)沒有(don't have) 哥哥(big brother) P.s. In Chinese culture big brother is 哥哥 little brother is 弟弟