3、hat从句;Itisnecessary(strange,important,wonderful,possible,likely,...)that...这类句中谓语动词多为(should)+动词原形。Itis+过去分词+that从句;Itissaid(reported,decided,believed,...)that...It+不及物动词+that从句;Itseems(happened,doesn’tmatter,hasturnedout,...)that...3.特殊句式1.Ihate____ when