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【记一记➡构建知识】 情态动词+have done 结构表示对过去发生情况的推测、后悔、责备、遗憾等。 could have done sth. 本可以做某事 must have done sth. 一定做了某事 should have done sth. 本应该做某事 might/may have done sth. 可能做了某事 needn’t have done sth. 本来没有必要做某事 shouldn’t have done sth. 本来不应该做某事 can’t/couldn’t have done sth. 不可能做了某事 *He taught us during the lunch breaks and the evenings when we should have been asleep. 在午餐的休息时间和晚上我们本应该睡觉的时候他教我们。 *Something terrible must have happened if Maochang was not coming to eat with him as he always did. 要是茂昌不像往常那样来和他一起吃饭, 那一定发生一些可怕的事情了。 *(2017·湖南高考)In the journey, the author was most disappointed at seeing the poor houses. 在旅行中, 作者看到破烂的房子的时候感到最失望。 *The wine was excellent, but the food was disappointing. 酒棒极了, 但是饭菜却让人很失望。 *To our great disappointment, it rained every day of the trip. 这次旅行中天天下雨, 让我们大失所望。 【核心短语】 5. give thought to认真考虑, 思考 【填一填➡激活思维】 ①Please ____ some _______ __ the problem. | 
