can

• ability to do sth. in the present (= to be able to) – I can speak English but I can´t speak Chinese.
• permission to do sth. in the present (= to be allowed to) – Can I work from home tomorrow?
• request – Can you wait a moment, please?
• offer – Can I serve you a coffeee?
• suggestion – Can we visit our friends at the weekend?
• possibility – It can be very hot next summer.