1，that在句首不可省略2.that从句与动词被其他词或从句隔开时，that一般不省略，以免造成语义混乱3.当两个或多个that引导的宾语从句并列使用时，即使省略了第一个从句的引导词that，后面的that也不可省略He said (that) it wasn’t his business and that the government should do something about it
