2019-2020学年人教版高中英语同课异构创意新课件:选修6 Unit 1 Art新
2019-2020学年人教版高中英语同课异构创意新课件:选修6 Unit 1 Art新第3页

过去式 (were)

had done

would/could/should/might +V (原)

would/could/should/might +have done

1.过去式 2. should+ V.(原) 3. were to do

would/could/should/might +V. (原)

虚拟语气在条件状语从句中的用法。