语篇语法 6.3 过去可能性 情态动词 may might could 接have 其他见收藏夹 谢谢 乐贯中西 65 0 04:48 不定式重难点(壹)too…to肯否定含义和不定式省略。 英格利是英语 24 0 05:00 语篇语法 6.5 描述与过去相反 情态动词短语 could have 其他见收藏夹 谢谢 乐贯中西 44 0 01:22 PPT课件分享038—...
Example: "You must study hard for the exam." Must have + past participle (for past actions): Used to express a past necessity or assumption that something has already happened. Example: "I must have left my keys at home." Must not (mustn't) + base form of the verb: This is the...
4. Must + have + past participle:表示对过去发生的事情的推测。 - He must have forgotten his keys at home. (他肯定把钥匙忘在家里了) 5. Must + have + been + present participle:表示对过去正在进行的动作的推测。 - She must have been studying when I called her. (我给她打电话时她一定正在...
XXX must + verb <--- Ans: 不一定 还有以下写法﹕ 1. XXX must + have + seen/past participle <--- have + participle <--- It implies "THE PAST". This action is plete. Example: Your father told you that he was going to meet Simon. Now you are talking to your father....
◆ 但是，在非正式英语中，也可以使用HAVE TO。★ Look at all those penguins. There has to be about a million of them!★ 看看那些企鹅，肯定有约一百万只!◆ To draw a conclusion about something in the past, we use MUST HAVE + PAST PARTICIPLE.◆ 对过去的事情作出推测，用MUST HAVE+过去分词...
4. MODAL You use must, or must have with a past participle, to indicate that you believe that something is the case, because of the available evidence. 必定 (表示有据推断) 例: "You must be Emma," said the visitor. “你一定是埃玛,”来访者说道...
Past Certainty Use must have + past participle to make deductions or express certainty about something in the past. Example: They must have worked hard to get those exam results. It seems certain that they worked hard. Have (got) to Obligation from Outside To talk generally about external ob...
Mustcan also be used when making positive assumptions, using logic, about things that happened in the past. For this we use Must + have + the past participle Thatmust have beenmy mother calling me while I was in the meeting. Nobody else has my private number. ...
2020高考英语备考:must+have+过去分词用法说明【解析】答案:C。该题考查的是常用英语标志和说明。只有看到箱子上有“THISSIDEUP”这样的标志,才能发现箱子放倒了,才会让对方把箱子反过来。任何新生事物在开始时都不过是一株幼苗,一切新生事物之宝贵,就由于在这新生的幼苗中,有无穷的活力在成长,成长为伟人成长为气力。