2018年教师资格证初中英语必背知识：虚拟语气
| 一、状语从句中的虚拟语气 | ||
| 虚拟类型 | 条件从句 | 主句 |
| 和现在事实相反 | 过去式(be动词一律用were) | should,,could, would, might +v. |
| 和过去事实相反 | 过去完成式 | should,,could, would, might +have done |
| 和将来事实相反 | should+do.; were to do; did | should,,could, would, might +v. |
| 二、其他形式虚拟语气 | ||
| 1. suggest, advice, order, command等表示建议、要求、命令等，should+do(should可省略) | ||
| 2. wish表虚拟时,和现在事实相反用过去式，过去相反用过去完成时，将来相反用would/could+do | ||
| 3. it is high time that sb did sth/should do sth(should不能省)； | ||
| 4.would rather sb did(和现在/将来事实相反)sth/had done sth(和过去事实相反) | ||
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