MFS SERIES TRUST IV, 485BPOS, EX-99.B9(A), 2000-12-29

MFS SERIES TRUST IV
485BPOS, EX-99.B9(A), 2000-12-29

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                                                             EXHIBIT NO. 99.9(a)

                              LEGAL OPINION CONSENT

I consent to the incorporation by reference in this Post-Effective Amendment No.
35 to the Registration Statement (File Nos. 2-54607 and 811-2594) (the
"Registration Statement") of MFS Series Trust IV (the "Trust"), of my opinion
dated December 22, 1997, appearing in Post-Effective Amendment No. 32 to the
Trust's Registration Statement, which was filed with the Securities and Exchange
Commission on December 23, 1997.


                                         JAMES R. BORDEWICK, JR.
                                         ---------------------------
                                         James R. Bordewick, Jr.
                                         Assistant Clerk and Assistant Secretary


Boston, Massachusetts
December 26, 2000