to be
The word 'être' is an essential verb in French. It is irregular in conjugation and used in a wide variety of contexts. For instance, it may denote existence, happenings, or qualities about the subject. It is also used when forming compound tenses.
I can be there in ten minutes.
This sentence is commonly used to express how long it will take for one to arrive at a certain place. Here, 'être' is used in the infinitive form along with 'pouvoir' (can) to indicate possibility.
You must be tired.
This sentence is using 'être' to express a state or condition. It commonly used after a long day of work or a strenuous activity to express empathy or understanding towards the interlocutor.
It's important to be honest.
This phrase uses 'être' to express a certain quality or characteristic that someone or something has. In this case, it is used to convey the importance of honesty.