[正] It gives me much pleasure to accept your invitation.
. I have much pleasure in accepting your invitation.
. I take great pleasure in accepting your invitation.
注：take great pleasure=greatly enjoy. 如说 have the pleasure 则后不接 in 而接 of，如 I have the pleasure of accepting your invitation.也是通的，不过此种语法多用于下类句中：May I have the pleasure of taking a glass of wine with you? I once had the pleasure of being introduced to you. I am sorry I cannot have the pleasure of accompanying you today. I hope you will give me the pleasure of dining with me at 8 o\'clock tomorrow evening at my place. There are many famous men whom I have not yet had the pleasure of meeting so far.