Unit 2 Poems Discovering Useful Structures 课件（共30张PPT）

主从 句 构 成 虚拟条件从句 主 句 与将来情况相反的 假设 ①If + 主语 + 动词的 过去时 ② If + 主语 + were to + 动词原形 ③ If + 主语 + should + 动词原形 主语 + would / should / could / might + 动词原形 If you came tomorrow, we would have the meeting. If it were to rain tomorrow, we would put off the sports meeting. If he should not come tomorrow, we would put off the meeting till next week. 时态

He talks as if he _________ (know) everything in the world. 2. He doesn’t dare to leave the house in case _______________________ (他被认出来). kn

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