would/should do是什么时态
should, would用来表示过去将来时态,should用于第一人称,would用于第二、三人称(在美国也可用于第一人称):I said I should turn in the exercise book the next day.我说我将在第二天交作业本。
He asked whether they would come back that evening.他问他们是否当天晚上回来。should和would常用于虚拟语气中:If it should rain tomorrow, I would stay at home.如果明天下雨,我会待在家里。If he should come back, we would welcome him.要是他回来,我们会欢迎他。Put on your raincoat in case it should rain.穿上雨衣,以防下雨。should表示惊讶和“应该”:It surprised us that he should have failed in the test.他竟然测试没过关,我们感到很惊讶。Why should he have made such a big mistake?他怎么会犯这么大的错误呢?You should have informed me two days in advance.你们应该提前两天通知我。We should learn from and help each other.我们应该互相学习,互相帮助。would常用于委婉、客气地提建议、请求:Would you help me serve tea?你帮我上荼好吗?What would you like to eat?你想吃点什么呢?I’d like some vanilla ice-cream.我想要些香草冰淇淋。would同will一样常用于表示习惯或者倾向:When she was free, she would go shopping.她有空时就会逛商店。When asked a very simple question, he would laugh it off.当有人问他一个很简单的问题时,他会一笑了之。
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