语法：这句句子that能省略吗,He was glad that Sam went to see him when he

当然可以省!这属于五大句型之一的 主语+系动词+标表语+（从句）这类结构用that引导的较多。有时that可以省略。有时,从句是完整的句子时。that无意义,可省略。如：glad,sure,surprised,astonished等。例：I'm glad (that) you have come。I'm sure he meant well。---------------出自张道真语法若还不信,请看朗文大辞典例句:glad (that) I'm really glad I don't have to go back there again。We're so glad you came。至于楼上几位为什么说不行,恕我才疏学浅,还真没看出什么门道~（至少可以确定：1。固定用法可以省略that,2。这不是表语从句3。这不是两个并列句,而是主从句。）