The Bund in Shanghai looks extremely beautiful with the flowers around.(改为感叹句)
（How beautiful） the Bund in Shanghai looks with the flowers around!
鲜花到处开放,上海的外滩看起来多美啊!
感叹句有两种形式,一种是what引导的,强调的是名词.另一种就如本句,how引导的,强调形容词或副词.原来的副词extremely就不需要了.