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...
◆ 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。
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....
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...
Usemust have +past participleto make deductions or express certainty about something in the past. Example: Theymust haveworkedhard to get those exam results. It seems certain that they worked hard. Have (got) to Obligation from Outside
Must can also be used when making positive assumptions, using logic, about things that happened in the past. For this we use Must + have + the past participleThat must have been my mother calling me while I was in the meeting. Nobody else has my private number....
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...
Have the driver bring the car round at 4.让司机4点钟把汽车开来.用法【2】(used with a n + past participle 与名词+过去分词连用) [cause sth to be done]使某事物予以处理 or [suffer the consequences of another person's action] 承受、 蒙受他人行为之后果We're having our car repaired.我们的...
Claire's car wasn't there so she must have gone to her mother's. 克莱尔的汽车不在那儿,想必她是去她母亲家了。 4. [MODAL 情态动词] 必定(表示有据推断) You use must, or must have with a past participle, to indicate that you believe that something is the case, because of the available...