How to say this is very important meeting. you ought not to miss it. in Japanese
1)
このこの(kono) (n) this会議会議(kaigi) (n,vs,adj-no) meeting/conference/session/assembly/council/convention/congressはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sighとてもとても(totemo) (adv) very/awfully/exceedingly/ at all/by no means/simply重要重要(juuyou) (adj-na,n) important/momentous/essential/principal/majorですです(desu) (aux) be/is/are。。(。) Japanese period "."是非是非(zehi) (adv,n) certainly/without fail/right and wrong/pros and consともとも(tomo) (prt) certainly/of course/to be sure/surely/even if/no matter/though/although/without even/without so much as/at the/emphatic particle出席出席(shusseki) (n) attendance/presence/appearance/to attend/to be present/to appearしてして(shite) (prt) by/as/indicates patient of a causative expression/acts as a connective/adds emphasis/and thenくださいください(kudasai) (exp) please give me/please do for me。。(。) Japanese period "."
