英语语法句子成分求解。解释详尽有理由最好。

①It is a wise boy that does everything by himself.句中that 引导的是名词性从句---强调句it be...that...
②担当表语才算作表语从句.
③I know nothing about his journey句中about his journey 作定语。
④They were quite confident that the debt would be paid soon.that后是宾语从句.再如i am sur that ...中的that后是宾语从句
⑤Nothing would satisfy the baby but that I put her on my lap.对于此句，你这么来看就好理解了：Anything would not satisfy the baby but that I put her on my lap. not...but...连接的两个并列的句子。

①It is a wise boy that does everything by himself.句中that 引导表语从句吗？
这是强调句型。去掉it is 和that句子还是正确的。
②难道不是直接担当表语才算作表语从句，例如The problem was that no one knew how to fix the machine？
当然是充当表语的从句才叫表语从句了。
③I know nothing about his journey .句中about his journey 看做nothing的宾补还是看做know的状语，还是这两种看法都对？
看作定语。关于这次旅行的任何事情。
④They were quite confident that the debt would be paid soon.语法书上说that后是宾语从句，对不？对呀。这是形容词后接宾语从句。类似：I am glad that you have come.
⑤最难的是：Nothing would satisfy the baby but that I put her on my lap.(这个我已经回答了）
Nothing would satisfy the baby but that I put her on my lap （would satisfy the baby.）
只有我把宝宝放在膝盖上才会让她满足。
1. the baby是宾语
2. that从句是主语从句
3. 宾语从句不是宾补
4. SVOO 双宾语都是主语发出的动作的宾语。如I gave him a book.都是我给的。
5.SVOC复合宾语的O是C意思上的主语。如：I made him happy.是他高兴。

开头:
无论走在星夜的月光小路，还是走在雨天的泥泞小路，我总会看见一径的光斑点点，花影弥漫。因为我的心里有一条阳光大道。
结尾:
　人生路上，我们都不知道未来还有什么，有什么呢？不重要。因为，在人生路上就等同于在阳光路上，亲情、友情、爱情、陌生情…。铺就了这一条阳光路，在阳光路上，阳光地上路。

强调句型，it is... that.... 本句强调主语 a wise boy

第一个是主语从句，