分类：教育/科学-外语学习
问题：请解答英语题Hestoodatthebeach,hiseyes_ 
He  stood  at  the  beach,his  eyes_____the  ships  and  the  seagulls  on  the  sea. xing  at x  upon x  on   fix  at请对各选项作具体分析.
回答：He stood at the beach,his eyes_____the ships and the seagulls on the sea.  xing at  x upon  x on   fix at 请对各选项作具体分析.选b,fixed upon ；his eyes　fixed　upon　the ships and the seagulls on the s，构成n名词＋　v+ed +其它成分的独立结构，做状语．his　eyes　做fixed　upon　的逻辑主语，注：　在该种人体部位做逻辑主语的独立结构中，判断是用ved还是ving主要看动词是及物还是不及物，本句中，fix one's eyes upon 是习语，fix是及物动词，所以用v＋ed形式．再如：The murderer was brought in , with both his hands tied behind his back.tie 及物The man died, with his eyes opened wide.Themandied,withhiseyesstaring/ are,look是不及物动词.所以用v+ing.