If Miss Green _____ late tomorrow,who would take her place?(come)用came可以吗?should come.

If Miss Green _____ late tomorrow,who would take her place?(come)用came可以吗?should come.
If Miss Green _____ late tomorrow,who would take her place?(come)用came可以吗?should come.

If Miss Green _____ late tomorrow,who would take her place?(come)用came可以吗?should come.
3、表示对将来情况的主观推测　　
　　①if+主语+were to do 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　
　　eg：
　　1．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）
　　2．If there were a heavy snow next Sunday,we would not go skating.
　　如果下周日下大雪,我们就不能去滑冰了.（事实：下雪可能性很小）
　　3．If she were to be here next Monday,I would tell her about the matter.
　　如果她下周一来这儿的话,我就会告诉她这件事的始末.（事实：来的可能性很小）
应该是可以的.

用的是虚拟语气，是对将来的虚拟。不可以用came。可是表示对将来情况的主观推测　　 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 ...

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用的是虚拟语气，是对将来的虚拟。不可以用came。

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虚拟语气的格式

表示与将来事实相反的虚拟条件句 (对将来的事实实现的可能性不大)。
其句子结构为：从句：If + 主语+ should (或were) + 动词原形+……主句：主语+ would (could, should, might) + 动词原形+……

If it should rain tomorrow, I would stay at home. 如果明天下雨的话，我将待在...

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表示与将来事实相反的虚拟条件句 (对将来的事实实现的可能性不大)。
其句子结构为：从句：If + 主语+ should (或were) + 动词原形+……主句：主语+ would (could, should, might) + 动词原形+……

If it should rain tomorrow, I would stay at home. 如果明天下雨的话，我将待在家里。（根据天气情况，明天不可能下雨）
If he came tomorrow, I would do it with him. 如果明天他来的话，我将和他一起做此事。

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should come
这是虚拟语气，“如果她迟到，我们就接她的班”
表示一种假设，主句用（should） do

虚拟语气的用法,

使用了虚拟语气，对未发生的事，从句谓语动词用should/would+动词原形

3、表示对将来情况的主观推测　　

　　①if+主语+were to do 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　

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3、表示对将来情况的主观推测　　

　　①if+主语+were to do 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　

　　eg：

　　1．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）

　　2．If there were a heavy snow next Sunday,we would not go skating.

　　如果下周日下大雪，我们就不能去滑冰了。（事实：下雪可能性很小）

　　3．If she were to be here next Monday,I would tell her about the matter.

　　如果她下周一来这儿的话，我就会告诉她这件事的始末。（事实：来的可能性很小）
应该是可以的。

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