when he got home,he found some pages in the book missing.为什么不用were missing
问题描述：
when he got home,he found some pages in the book missing.为什么不用were missing
答
在这里, "he" 才是主角, he found-他发现, 就已经有动词去配合他了,不用were
如果变成:
when he got home, he found that some pages in the book were missing.
这里pages是主角, 就会用were missing.