had to make it up vs must have made it up

Both phrases are correct, but they are used in different contexts. 'Had to make it up' implies a necessity or obligation to invent something, while 'must have made it up' suggests a strong likelihood or assumption that something was invented. They are not directly comparable as they convey different meanings.

Last updated: March 31, 2024 • 652 views

had to make it up

This phrase is correct and commonly used in English.

This phrase is used to indicate that someone was required to invent or fabricate something, often to cover up a mistake or lack of knowledge.

Examples:

I didn't know the answer, so I had to make it up on the spot.
She had to make up a story to explain her absence.
He had to make up an excuse for being late.
Sometimes you have to make it up as you go along.
In a pinch, you might have to make it up as you go.

Alternatives:

had to invent it
had to fabricate it
had to come up with it
had to improvise it
had to concoct it

must have made it up

This phrase is correct and commonly used in English.

This phrase is used to express a strong assumption or belief that someone invented or fabricated something.

Examples:

He must have made up that excuse.
She must have made up the whole story.
They must have made up the details.
I think he must have made up the numbers.
She must have made up the information.

Alternatives:

probably made it up
likely made it up
seems to have made it up
appears to have made it up
could have made it up

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had to make it up vs must have made it up

had to make it up

must have made it up

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