must modal verb drawing conclusions exercises

You must to go.(This is NOT correct – we don’t use all of the infinitive – we need to remove the TO part).Instead of To speak, we only put speak after the modal verb Must. This means the infinitive without To. For example the infinitive is To Go so the base form is just the Go part. Just like the other modal verbs, there is never an S at the end of must:Īfter Must we have the verb, or more specifically, the base form of the infinitive. You see there is no change in the word MUST. For example, 'You could try calling him to see if he's available.With modals verbs, there is only one form of it for every subject pronoun: In some cases, they may be used to express a suggestion or a recommendation. Note that these modal verbs can have other uses too.

It can't have been the fish that made him sick.

He can't have heard the phone otherwise he'd have answered it.

We use CAN'T (CANNOT) when we have strong evidence and we are certain that something is NOT true. She may not have finished work yet.Īnd we use COULD when we're a bit less certain.

Where are my keys? You might have left them in the shop.

That may be the phone call I'm expecting.

She might be interested in this job offer. Note that the possibility can also be negative - might not, may not. We use MIGHT/MAY when we have some evidence and we think something is possible but we’re not certain.

You must be tired after such a long drive.

We use MUST when we have strong evidence and we are certain that something is true. The basic structure for deduction about the past is: subject The basic structure for deduction about the present is: subject

It can't be going to snow (because it never snows in Thailand).

It might/may/could be going to rain (because there is a large grey cloud in the sky).

He must be a policeman (because he's wearing a police uniform).Modal verbs of deduction express certainty like this: modal verb of deduction The usual modal verbs that express deduction are:ĭeduction has degrees of certainty, say from 99% to 30%.

To make a deduction, we need facts and evidence (the uniform, the cloud). If we see a large grey cloud in the sky, a possible guess is that it is going to rain-maybe. If we see a man in police uniform, a reasonable deduction is that he is a policeman. Deduction (noun): guess reaching a conclusion by reasoning and logic, based on evidence

Must modal verb drawing conclusions exercises