In English we use should / shouldn't /ought to / oughtn't to give advice. We use should / ought to to say something is a good thing to do and shouldn't / oughtn't to say something is a bad thing to do.
Example sentences :
Note : To ask for advice we can say: What should I do?
In English, "can" is a modal verb and only has a present, past and conditional form. It can also be used with a future meaning.
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Note : Can is not used to talk about specific possibilities.
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In English, could is used to talk about past ability/ permission/ possibility.
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"Be able to" can be used in the present, past, future, present perfect and as a gerund or infinitive.
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Note : be able to in the present and past is more formal than can or could.
In English we use might or may to say something in the future is possible, but not decided.
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To make questions with might we usually use Do you think...?
Example questions :
In English we can also use might in short answers.
Example short answers :
In English we use have to + infinitive to say something is necessary or obligatory. We normally use have to for a general obligation from an outside source, such as work or the law.
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In English we use don't have to + infinitive to say something is not necessary or obligatory. It means you can if you want to, but it's not necessary.
Example sentences :
To make questions we use do/does.
Example questions :
Form : ( Must + infinitive without to )
In English we use must + infinitive to talk about rules and obligations. We normally use must when the speaker imposes the obligation, such as a teacher to students, or even to yourself.
Form : ( Mustn't + infinitive without to )
In English we use mustn't + infinitive to say something is prohibited.
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Note : You can often use can't or be + not allowed to instead of mustn't.
Example sentences :
Note : Mustn't and don't have to have completely different meanings.
Mustn't Vs Don't Have To
Note : Have to is a normal verb and exists in all tenses whereas must is a modal verb and its only forms are must and mustn't.
You can also use have to and must for strong recommendations.
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In English we use must when we are sure something is true.
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In English we use may or might when we think something is possibly true.
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In English we use can't when we are sure something is impossible.
Examples sentences :
Note : In this context, the opposite of must is can't, NOT mustn't!
In the past, can't, could, may, might and must for probability change to can't have, could have, may have, might have and must have + past participle (Verb 3).
In the past, should and ought to change to should have and ought to have + past participle (Verb 3).
Note : the form of "must" for obligation and "can" are exceptions.
Must for obligation changes to had to + infinitive
Can changes to could or was able to
Modal example sentences | |
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Have you watched A.I.? It's quite violent, too, you might like it. | <A.I.>는 봤어? 그것도 꽤 잔인하거든, 좋아할 지도 몰라. |
You know, the landlords should give you some kitchen utensils. | 왜 있잖아, 집주인은 부엌도구를 좀 제공해줘야 하니까. |
You must work very hard. | 되게 열심히 일하나 보다. |
And I can hold Bear, we can let them sniff each other first. | 그럼 내가 베어를 잡고 있을게. 우선 서로 킁킁거리게 놔두자. |
Sorry Mike, I can't hear you, I have to hang up. | 미안 마이크, 안 들려. 이제 끊어야 돼. |
I brought one, maybe you should bring one, too. | 난 내 거 챙겼는데. 너도 필요할 지도 몰라. |
Hm, I would like to see her, but I don't think we should disturb her. | 음, 보고 싶긴 한데, 방해하면 안될 것 같아. |
Okay, the earliest I can take Bear out is 7. | 좋아, 베어 산책을 최대한 앞당기면 7시니까. |
Plus I really have to have a shower. | 그리고 정말 샤워 좀 해야 돼. |
Hmm, nope, I think we can buy everything here. | 음, 아니, 여기서 다 살 수 있을 거 같아. |
We should go and see my parents' house in Angel! | 엔젤에 있는 우리 부모님 집을 보러 가야지! |
Yeah, we should add some salt. | 응, 소금을 좀 쳐야 해. |
So I guess we have to see the next one now. | 그럼 어쩔 수 없이 이 다음 집도 봐야겠네. |
I'm already scared, can you please stop with that evil thing? | 나 안 그래도 무서우니까, 마귀네 뭐네 하는 소리 좀 그만 할 수 없어? |
Can't we have the meeting without the f*cking IT manager! | 그 망할 놈의 IT 매니저 빼놓고 회의 하면 되잖아! |
But he can't walk on it. | 걷질 못하네. |
I can hear well, you don't have to shout at me, dear. | 나야 잘 들리니까, 그렇게 고함 지를 필요 없어요. |
Okay, we can put all my winter clothes away, then. | 좋아, 내 겨울 옷이야 좀 치워둘 수 있어. |
Mike, can you hear me? | 마이크, 내 말 들려? |
Then we can talk, maybe! | 그러고 나서는 상의해볼 수도 있어! |