We are looking for a good restaurant. Can you help us? I can't play tennis very well. (Don't put 'to' after modal verbs - can, would, might, must, should etc) How old are you? Juan has been working as a waiter for eight months. (Use 'since' for a point in the past until now – 'since 2 o'clock', 'since March', 'since February', 'since 1998' etc.)