she was quiet confident that everything would go as planed中that引导的结构是?

一般的说法,这是主系表结构的形容词后接的宾语从句这类句型结构是：主语+系动词+形容词+that引导的宾语从句类似的句子还有 I am afraid that you are wrong.但语法界上还有另外一个版本,就是认为that后面的从句叫原...可不可以理解为是表语补足语？这种句型，一般语法书上只有两种解释，最多的说法就是宾语从句，其次有部分把它分类到状语从句，但没有归类到表语补足语的。另外，主语补足语，一般是指把句子改成被动语态后，原来宾语补足语的部分变成主语补足语。如I saw him playing basketball yesterday. playing..是宾补　　被动： He was seen playing basketball yesterday.playing...成为主补另外也有说法，把表语归为主语补足语。总之，语法种种，是为了理解的，不能死板套用。我个人认为，只要能看明白句子的意思，会说会用，就可以了，不必去追究这么细。