Complex sentence: Aircraft such as the Airbus A340 and the Boeing 747-400 use winglets while other designs such as later versions of the Boeing 777 and the Boeing 747-8 have raked wingtips.
Split into simpler sentences: Aircraft such as the Airbus A340 and the Boeing 747-400 use winglets. Other designs such as some versions of the Boeing 777 and the Boeing 747-8 omit them in favor of raked wingtips.