从句:①if+主语+were to do 主句:①主语+should/would/could/might+do
②if+主语+did/were ②主语+should/would/could/might+do
③if+主语+should+do ③主语+should/would/could/might+do
例如:If he went,would you go too? 如果他去,你也去吗?(大概他不会去)
If he should come here tomorrow, I would talk to him. 如果他明天来这儿的话,我就跟他谈谈。 (事实:来的可能性很小)
注意与说明: 对于与将来事实相反的情形,请注意以下几点:
一是这里说的与将来事实相反,实为对将来情况的推测;
二是此用法中的条件从句谓语除用过去式外,有时也用should+动词原形(表示可能性极小,常译为万一)或were to+动词原形(表示与将来事实相反的假设);
三是当条件从句使用should+动词原形这样的谓语时,主句谓语除可用should (would, could, might)+动词原形这样的虚拟语气外,也可用陈述语气或祈使语气。如:
I should see him, Ill tell him. 万一我见到他,我就告诉他。
If it should rain tomorrow, dont expect me. 万一明天下雨,就别等我了。
二、wish 后宾语从句
1、表示与现在事实相反的愿望,谓语动词用过去式 。例如:
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