Love taking part in lecture (7)
I believe the answer is:
oration
'lecture' is the definition.
(I've seen this before)
'love taking part' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'taking' means one lot of letters go next to another.
'part' becomes 'ration' (ration is a kind of part).
'o'+'ration'='ORATION'
'in' is the link.
(Other definitions for oration that I've seen before include "Ontario (anag)" , "A long ceremonial speech" , "A formal or ceremonial speech" , "Power of speech" , "A public or ceremonial speech" .)