有一读者问：下面一句中 started back 与 pleased to...之间为什么没有 to?pleased to...是什么成分？
(1)...， and started back pleased to have found a covey close to the house and happy there were so many left to find on another day.（前文是 Coming out while you were poised unsteadily on the icy, springy brush they made difficult shooting and I killed two, missed five; they 指 quails）
这里的 pleased 和 happy 是形容词，故其前不可有 to。它们构成一并列主语补足语，其逻辑主语也就是其所在分句中的主语，即I。这种将形容词用作主语补足语的现象并不罕见，再如：
(2)She gazed at him speechless for a moment.
(3)Mr. Gregory put him in the bedroom, and he's crying fit to burst.
下面再举一两个含有并列主语补足语的例证：
(4)He lay there content and comfortable .
(5)The wind blew scented out of France into her nostrils and soft on her cheek.（这里的 scented 似可看作形容词）
(6)He walked frail , insignificant , shabby , miserable —...
关于主语补足语详见拙著《高级英语语法》下册第677—681页。
你还问到 pleased to...是什么成分。重要的是应知道 pleased 是一形容词，后常接不定式正如上述句（9）中的 fit 一样，再如我们常说的：
(7)I'm pleased to meet you.
至于 pleased 之后的不定式，有的语法家认为它是原因状语，有的语法家则认为它是宾语。
