This modal is used to express certainty about something in the present.

This tense is used to emphasize the duration of a completed action in the past.

This is an adverb/preposition to indicate a purpose

To surpass a previous best performance or achievement.

A small, harmless lie.

This modal is used to express impossibility about something in the present.

This tense is used to express a completed action in the past that happened before another past action.

This is an adverb/preposition to indicate the inner part of something, or entering in a physical or abstract area

To try to win against others.

Charitable giving or the love of humanity.

This modal is used to express a strong possibility about something in the past.

This is its structure HAD + PAST PARTICIPLE

This is an adverb/preposition to indicate company

To accomplish something that you have been aiming for.

To promise or swear to do something.

This modal is used to express a weak possibility about something in the past.

This is its structure HAD BEEN + PRESENT PARTICIPLE

This is an adverb/preposition to indicate positively doing something

To experience something difficult or unpleasant and continue to exist.

To begin or start something, often quickly.

This modal is not od Deduction:
Might
Can
Could
Must
Couldn't
Can't

This tense is used to express a repeated action that was completed in the past.

This is an adverb/preposition to indicate the total or the contrary of something

A significant achievement or turning point.

A group of interconnected people or things.