要表达过去的许可,我们可以用“could” 或其他表达方式,例如:You could have left earlier. (你本来可以早点离开的。) 这同样是虚拟语气,而非“can” 存在过去分词的证明。 网上搜索“can’s past participle” 会得到许多讨论和解释,但这些解释通常会混淆“can” 的过去时 “could” 与其不存在的过去分词。一些...
However, when we need to use "can" in a past context that requires a past participle form (such as in perfect tenses), we still use "could." In practice, this means that in structures like the present perfect or past perfect, you would use "have/had + could," but note that this ...
7. Could + have + past participle: Unrealised past ability This is used to say that someone was able to do something, but they did not try to do it. Sometimes this is a form of criticism. • She could have married anyone she wanted to. • Wh...
vb (intr) , past could 1. used as an auxiliary to indicate ability, skill, or fitness to perform a task: I can run a mile in under four minutes. 2. used as an auxiliary to indicate permission or the right to something: can I have a drink?. 3. used as an auxiliary to indica...
ongoing actions C. a passive state or a completed action D. future E. vents 相关知识点: 试题来源: 解析 C。中文解析:文中提到 The past participle can be used to show a passive state or a completed action.(过去分词可以用来表示被动状态或已完成的动作。)所以答案是 C。反馈 收藏 ...
modalSubject"have"main verb (past participle) MightI you we they he / she / ithavebeento France? Practice Complete the sentences with "can't have", "must have" or "might (not) have" using the verb in brackets: . 1) Hehard for his exams because his results were very good. (study...
past an d has a connection with the present.Eddie has just eaten Hobo's food.(Eddie ate the food, an d now Hobo has nothing to eat. )We also use the present perfect tense to talk about how many times an action has happene d till now.I have already rea d this book many times....
Who would have ever thought Patrick would go to the extremity of jumping out of an airplane to propose to Michelle? The financial extremity could cause us to lose our entire company. How do you use rebuke in a sentence? Rebuke sentence example ...
…以来达,计We use the present perfect tense to talk about an action我们用现在完成时谈论从过去that started in the past and continues to the present.开始一直持续到现在的动作。I have lived here since I was born.我自出生以来就一直住在这里。We use the present perfect tense to talk about an ...
When talking about the past, you use could have and a past participle. It could have been much worse. You also use can for the present and could for the past to talk about rules or what people are allowed to do. They can leave at any time. Note that when making requests either can...