speculating about the past

Front

What does 'must have' indicate in speculating about the past?

Back

It indicates a strong belief or certainty that something happened in the past.

Front

What does 'can't have' suggest when speculating about the past?

Back

It suggests that something is impossible or very unlikely to have happened.

Front

What is the meaning of 'could have' in the context of past speculation?

Back

It indicates a possibility that something might have happened in the past.

Front

How do you use 'might have' in a sentence about past events?

Back

It is used to express a weaker possibility than 'could have'.

Front

What is the difference between 'must have' and 'might have'?

Back

'Must have' indicates certainty, while 'might have' indicates a possibility.

Front

Provide an example of a sentence using 'can't have'.

Back

He can't have gone to the party; he was sick.

Front

What is the structure of a sentence using 'must have been'?

Back

Subject + must have + past participle (e.g., She must have been there).

Front

When do we use 'couldn't have' in speculation?

Back

We use it to express that something was impossible in the past.

Front

What is the function of modals in speculating about the past?

Back

Modals help express degrees of certainty, possibility, or impossibility regarding past events.

Front

How can 'mustn't have' be used in a sentence?

Back

It indicates that something was not allowed or not possible in the past.