He said maybe David was angry with me and that I had better find another friend.中that的意义和作用原题是改错题，答案说and后面缺少一个that，如果是接宾语从句为何不能省略that？
问题描述：
He said maybe David was angry with me and that I had better find another friend.中that的意义和作用
原题是改错题，答案说and后面缺少一个that，如果是接宾语从句为何不能省略that？
答
that是宾语从句“that i had better find antother friend."的引导词，这句从句和“david was angry with me"的成分是一样的，都作为这句话的宾语存在。
答
他说大卫对我很生气,我最好再找个朋友.
that关系代词
答
that是引导宾语从句,做said的宾语.和maybe David was angry with me 一样的语法成分,maybe前的that省略了,and后的that不能省.
答
这句话的主体结构是 He said ... and that...
that引导的是宾语从句，是said的宾语
句意是 他说David对我感到很生气，他还说我最好找其他人做朋友。