He held a book of poems as if it were a diamond necklace.虚拟语气后面为啥用的是were不是was?

问题描述:

He held a book of poems as if it were a diamond necklace.虚拟语气后面为啥用的是were不是was?

虚拟语气中,be动词基本使用的都是were,而不用was.
无疑后请采纳.
书山有路勤为径,学海无涯苦作舟.
-----------与君共勉-----------