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Making Predictions (Must, Might, Can't)

When you make a prediction or draw a conclusion, there's always doubts about how certain your prediction or conclusion is. A prediction as well as a conclusion usually has a degree of uncertainty.

In predicting facts, or drawing conclusions, this uncertainty is expressed by the verbs "Must" "might" and "can't".

Must is used when you are 90% sure your prediction or conclusion is right, you have strong evidence.

Might is used when you're unsure of your prediction or conclusion, you're 30% sure, but you may be wrong.

Can't is the opposite of Must in this case and expresses an event you are 90% sure that it's not probable.

Examples:

a) Jim and Jill are not talking to eachother, they must be angry at one another.

( in this case you're drawing a conclusion you're almost certain about.
Your conclusion is about something that is currently true for you.( they are angry at eachother now)

b) They might get divorced soon


( you don't know this you're making a prediction, but you're not really sure, you're just saying one of the many alternatives that can happen. Again this is a prediction about the future using facts you see now )

c)They can't be in love if they're acting like that!
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