Must

[FFFF]

hi
when I say:
I must drive my car carefully- I mean right now
How I can talk about past by using must?
like this:
I must have driven my car carefully
or
I should have driven my car carfully.


:D

[byron]

hi
when I say:
I must drive my car carefully- I mean right now
How I can talk about past by using must?
like this:
I must have driven my car carefully
or
I should have driven my car carfully.


:D

Essentially you cannot use the word 'must' in this instance in the past tense unless you qualify the statement with more information for the listener.

example 1: I must have driven my car carefully because it is in excellent condition considering its age.

example 2: I should have driven my car carefully because it now has too many things wrong with it

I hope this helps.

http://www.education-jobs.co.uk

[Danyet]

It depends on the context.


I must have driven my car more carefully than you because you had an accident and I did not!

[byron]

It depends on the context.


I must have driven my car more carefully than you because you had an accident and I did not!

yes! Here again the use of the word 'must' has been qualified with further information supporting the statement.