How to say much to my surprise, the door opened noiselessly. in Japanese
1)
とてもとても(totemo) (adv) very/awfully/exceedingly/ at all/by no means/simply驚no dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbいい(i) (prt) strengthens a question, assertion, etc.たことno dictionary result, likely a conjigated verbに(prt) indicates such things as location of person or thing, location of short-term action, etc.はは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sigh、、(、) Japanese commaドアドア(doa) (n) doorがが(ga) (prt) indicates sentence subject/indicates possessive/but/however/still/and音音(oto) (n,n-suf) sound/noise/report/note/fameもなくno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verb開no dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbいい(i) (prt) strengthens a question, assertion, etc.たた(ta) (aux-v) indicate past completed or action/indicates light imperative。。(。) Japanese period "."
