I'd just about given myself up for lost when I was spotted by a ship这里为什么要用given,about在这个句子里有什么作用

I'd just about given myself up for lost when I was spotted by a ship这里为什么要用given,about在这个句子里有什么作用
I'd just about given myself up for lost when I was spotted by a ship
这里为什么要用given,about在这个句子里有什么作用

I'd just about given myself up for lost when I was spotted by a ship这里为什么要用given,about在这个句子里有什么作用
about 是adv.意思是大约,几乎.
( i had ) given是构成过去完成时态的过去分词