Atthetimetheywerecrearted,theImpressionistsencouragedartiststolookattheirenvironmentinnewways.Therearescoresofmodernartstyles.butwithouttheImpressionists.manyofthesepaintingstylesmightnotexist.在句子中,第一句是

Question

At the time they were crearted,the Impressionists encouraged artists to look at their environment in new ways.There are scores of modern art styles.but without the Impressionists.many of these painting styles might not exist.在句子中,第一句是什么句型?

Answer 1

主从复合句,从句时时间状语从句At the time they were created,后面是主句the Impressionists encouraged artists to look at their environment in new ways.
翻译：
它们从被创造出来开始,印象派便要求艺术家用新眼光打量周围的环境.