请问这句话的谓语?

题目

请问这句话的谓语?
But if Apple and Google expect customers to ditch不再使用 their PCs for these devices,the accompanying services better be rock-solid.
感觉主句有点怪.the accompanying services would better be rock-solid.我觉得应该这样,就像we'd better .即we would better.这样.

答案

better作为助动词,意思是“应该,还是...好”,是had better的口语化形式,又如：You better come back.你还是回来好.
（引自陆谷孙主编、上海译文2007《英汉大词典（第2版）》）
据上,这句话的谓语就是better be（助动词+主动词）.