(
课件网) 主从 句 构 成 时 态 虚拟条件从句 主 句 与现在事 实相反的 假设 If + 主语 + 动词过去时 (be用 were) 主语 + would / should / could / might + 动词原形 Review If I were you, I should buy it. If I had time, I would study French. If she knew English, she would not ask me for help. 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). knew he should be recognized Read Poem C in the Reading section find out the sentences in the subjunctive mood. We would have won … If Jack had scored that goal, If we’d had just a few more minutes, If we had trained harder, If Ben had passed the ball to Joe, If … If there had been enough rain in spring, we would have had a good harvest now. If I had come here yesterday, I would have seen him. If you had taken my advice, you wouldn’t / couldn’t have failed in the exam. If I had known your telephone number yesterday, I should / would / could / might have telephoned you. More examples Summary 主从 句 构 成 时态 虚拟条件从句 主 句 与过去事实相反的假设 If + 主语 + had +过去分词 主语 + would / should / could / might + have + 过去分词 1. Maybe if I _____ (study) science, and not literature then, I would be able to give you more help. 解析：根据意思“如果那时我要是学了理科，不是文科，我就能给你更多的帮助了。”判断这是与过去事实相反的假设，所以用过去完成时。答案为had studied。 [典型例题] had studied 2. I _____ (come) sooner but I didn’t know that they were waiting for me. 解析：根据but I didn’t know that they were waiting for me.判断这是一个与过去事实相反的假设，所以主句应该用would have done。答案为would have come。 would have come 3. -- Sorry, Professor Smith. I didn’t finish the assignment yesterday. -- Oh, you _____ (do) it as yesterday was the deadline. 解析：此处表示和过去事实相反的情况，应该用“should + have + 过去分词”，表示“本来应该做、而未做”。 故为should have done。 should have done 4. If he _____ (follow) my advice, he wouldn’t have lost his job. 解析：根据“wouldn’t have lost”可判断，if引导的状语从句表示与过去事实相反的虚拟，故为had followed。 had followed 5. John went to the hospital alone. If he _____ (tell) me about it, I would have gone with him. 解析：前一句是陈述语气，说明动发生在过去，而且后一句的主句已经是would have gone说明是与过去事实相反的虚拟语气。与之对应的从句结构，应该用“had +过去分词”，故为had told 。 had told 6. We _____ (be) back in the hotel now if you didn’t lose the map. 解析：根据条件状语从句中if we didn‘t lo se the map可知，主从句都是对现在情况的假设 ，所以填wo ... ...
