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Step2 Learning
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时间
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从句
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主句
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与现在事实相反
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If +主语+动词的过去式(be-were)…
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主语+ would / could/ might+动词原形
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与过去事实相反
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If+主语+had +过去分词
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主语+ would/ could/might + have+过去分词
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与将来事实相反
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If+主语+were to/(should) + 动词原形
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主语+ would / could/ might+动词原形
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注: 当从句的if省略时, 句子要倒装, 如
If I were you, I would not do that.
___________________, I would not do that.
