高二英语modalverb内容摘要：
做而实际未做的事 .“本来可以 … ” (may/can have done没这意思 ) eg: He might / could have given you more help, even if he was very busy. should/ought to + have done, 肯定句中，表过去应该做而实际未做；否定句中，表过去不该做的事 却做了。 eg: 1) I should/ought to have had a talk with her , but I was too busy. ３、 needn’t have done表过去做了不必做的事。 “本来不必 …… ” You needn’t have hurried. There was plenty of time. would rather (not) + have done 表“当时宁愿做了某事”。 我宁愿当。阅读剩余 0%
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