大家好，請問一下
想釐清seem/appear (to be)的用法，看到牛津英語用法指南PEU是這樣寫的：
條目507.3 seem
"Seem to be" is normal before noun phrases.
I looked through the binoculars: it "seemed to be" some sort of large rat.
(NOT ... it seemed some sort of large rat.)
I spoke to a man who "seemed to be" the boss. (NOT ... who seemed the boss.)
However, "to be" can be dropped before noun phrases which express more
subjective feelings.
She "seems (to be) " a nice girl.
The cup "seemed" almost doll's size in his hands.
It "seems" a pity, but I can't see you this weekend. (NOT It seems to be a
pity ... )
以上是書中內容，但我覺得這有模糊地帶，
例如I spoke to a man who "seemed to be" the boss.難道就不能這是我的「主觀」
感受而寫成who seemed the boss？
總之，這解釋似乎會有自由心證的部分？
請教一下。謝謝！
原文http://i.imgur.com/FSVuDe5.jpg

會不會是她是不是好女孩，答案每個人的主觀判斷不同；但他是不是老闆，卻有一個客觀的答案存在，不因主觀判斷而改變

原文不就寫了the difference is not always clear-cut,and both are often possible.

seem情態內涵也有分主觀、客觀意義，前者是說話者自己隨意添加如感覺，後者是說話者腦補他人意見如據信（+be判斷）

感謝回應！