俗话说“条条大路通罗马”，背诵
Accredit & authorize & commission---Accomplish&achieve
Accredit & authorize & commission
accredit
强调相信某人，从而把责任托付给那人。(ps:特指委任大使)
Eg:He was accredited to China.
authorize
强调正式授权，强调正式，威严。
Eg:You can’t be authorized to enter the security area.
commission
约等于authorize
Accomplish&achieve
Accomplish:
强调事情完成的成功性，以及完整性
Eg:That’s it ,mission accomplished.(we have done what we aimed to do.)
Achieve
强调过程曲折而最终得到的目标，地位，标准
Eg:Their background give him few of achieving at school.