“ 6. somewhat formal — used to talk about the result or effect of something that may happen or be true
…
I will feel very guilty should anything go wrong. [=if anything goes wrong]
—usually used with if
I will feel very guilty if anything should [=were to] go wrong.
… ” --- ( Merriam-Webster's Advanced Learner's English Dictionary: should )
[问]: I will feel very
guilty if anything should [=were to] go wrong. 老师们,这里的were
to怎么理解.Anything不是接单数谓语动词的吗?
《韦氏高阶》的确是这么说的,但这种说法似乎欠妥。当主句谓语动词为will do 陈述语气时,if 从句是不可以用were to do这种虚拟语气形式的。If 从句用 should do时,主句可以用陈述语气、虚拟语气和祈使语气。建议网友忽略《韦氏高阶》这个解释,知道if 从句用should do表示将来条件时,主句可以用陈述语气will do即可。如果if 从句用 were to do, 主句谓语动词必须含有情态动词过去形式,通常为would do.
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