How to say the speaker was so well known as to need no introduction in Japanese
1)
そのその(sono) (n,n-suf) that/garden/orchard/park/plantation/place/location講演者講演者(kouensha) (n) lecturer/speakerはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sighとてもゆうめいだったno dictionary result, likely a conjigated verbの(prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates questionでで(de) (prt) indicates location of action/at/in/indicates time of action/indicates means of action/cause of effect/by/and then/so/indicates continuing action/ indicates certainty, emphasis, etc.紹介紹介(shoukai) (n,vs,adj-no) introduction/referralはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sigh不要不要(fuyou) (adj-na,n,adj-no) unnecessary/unneededな(prt) connects adj to noun/indicates emotion or emphasis/command/prohibitionほど(n-adv,n) degree/extent/bounds/limit/ indicates approx. amount or maximum/upper limitだっただった(datta) was。。(。) Japanese period "."
