Complex sentence: In December 1787 Bourgeois was elected an Associate of the Royal Academy and was elected a full member on 11 February 1793, when he donated a landscape painting as his diploma work.
Split into simpler sentences: In December 1787 Bourgeois was elected an Associate of the Royal Academy. He would be elected a full member on 11 February 1793, when he donated a Landscape as his diploma work.