to my regret和much to my regret有什么区别?much的作用是什么?

much to my regret to my regret和much to my regret有什么区别?much的作用是什么? Much to my regret,I can't accept your kind invitation.改同义句 regret to do和regret doing有何区别 Regret to do和regret doing有何区别 regret to do 和热regret doing 有什么不同? 请问有“Much to one's regret这个词组吗 much to our regret we will not be able to visit your next year可以说to our great regret we ... Give you a kiss to express my regret.译成汉语 regret的用法有regret to have done吗,有的话,和regret having done有什么区别 regret not to do sth和regret doing是否可以替换 关于regret的词性和用法regret可以做动词和名词一般说regret to do/regret doing我想问的是 be regret for doing sth.例如：I'm not regret for having done it. When I think back,I very much regret But I will learn to love myself,love Now too late to regret my baby my love,choose to love you,hope you can't make me feel regret! I love music so much that not a day passes when I do not regret ( )music in my youth.A.not to have studied B.not having studiedC.having not studied D.to have not studied说明理由 1：no soon...than和hardly...when的区别2：regret to do 和regret doing的区别 [紧急求助]regret doing sth.与regret to do sth.