了

The past tense with the particle 了

The modal particle 了 has several functions. One of its functions is to express the past tense.

Change in states with the particle 了

The modal particle 了 has several uses. One of them is to indicate the change in the state of something or introduce a new situation.

The pattern 都…了

The structure 该…了

This structure is used to say it’s someone’s turn or time to do something.

The completion of an action with the particle 了

了 is placed after a verb to express the completion of an action.