2019年9月15日 · must have; must not have and had to have when we're 99% sure couldn't have when something is impossible Is this a valid explanation of the usage of the modal verbs? For example: Jeremy may not have eaten the cake. There were a lot of people in the house who could've done that. -50% possibility Jeremy must not have eaten the cake. He's allergic ...

2007年3月6日 · "The Livi striker must have knew it wasn't his day less than a minute into the second-half when he somehow managed to hit the post from only three yards out with the goal at his mercy." It is rare in both versions of English (AE and BE), but it …

2014年10月15日 · It's simply related to the tense of the verb. "That must be" is present, and can be used for something that has already happened, or that might happened. "Must have been" is past, and cannot be used for something that might happen. PAST - I feel off when on stage yesterday. - Oh, that must be embarrassing/Oh, that must have been embarrassing ...

2016年4月12日 · You must have done something = It’s obvious that you did it You should have not thrown your cigarette into a location where explosives were stored. You should not have thrown your cigarette into a location where explosives were stored. You must have not thrown your cigarette into a location where explosives were stored.

2010年3月5日 · Must have is a correct form, so it's hard to think must not have is wrong. However, most people prefer other ways of saying that, I think. Must have not is possible, of course - meaning cannot have - so maybe it's just a matter of word order.

2016年1月26日 · A modal (such as must) is followed by the bare infinitive form of a verb. In "I must do", do is a bare infinitive verb. In "I must have done", have done is a past bare infinitive verb. The past infinitive form is not equivalent to the Present Perfect tense. You can say She must have done it yesterday , but you cannot say She has done it yesterday .

2011年11月9日 · You should have received a confirmation email implies: Under normal procedures, everyone receives a confirmation email. Assuming everything is happening in accordance with the normal procedures, you will have received a confirmation email. and You must have received a confirmation email

2012年10月24日 · We can use must have to to say that we conclude something based on what we know about a present situation and must have had to to conclude something about a past situation: [...] - John wasn't at home when I went round. He must have had to go out out unexpectedly. (Advanced Grammar in Use 2nd edition, Martin Hewings) John wasn't at …

2011年4月6日 · Hi, I am not sure how to respond to somebody when they say, “we had a great time at the game!”, and I agree to that. 1. I am sure you must have had a great time. 2. It sure must have been a great time. Thanks, MG.

2013年2月2日 · You must have helped her.' Similarly in your second context: You must have invited her. You really should have invited her. But: I see that Mary has come to our party. I didn't invite her. You must have invited her. Or: A: I didn't invite her. B: Well, she's here so you must have invited her.