'of'放在句子最後時,是甚麼意思

For months my life was despaired of. 我對生命失去了希望
句子最後有個of, because it is in passive voice.

Rewrite in active voice: For months, I despaired of life.
despair is an intransitive verb It can take on a preposition "of" to mean 喪失信心.

其他例子:

(Active voice) I disposed of my old books.
(Passive voice) My old books were disposed of.

2011-09-20 01:18:07 補充：
intransitive verb:
approve of; dream of; disapprove of; think of