阅读理解
Restaurants do not include a service charge in the bill ,so you should tip(付小费)the waiter 15% of the total bill.If service is slow or particularly bad, some Americans will tip only 10%.If service is particularly good, it is appropriate to tip 20%.If service is so bad that you will never eat in the restaurant again, leave two cents.This is deliberate insult(羞辱), because it tells the waiter that you don’t forget to leave a tip.Tipping is only appropriate in restaurants which offer table service.You do not tip the cashier in a fast food restaurant.
Taxi drivers expect to get a tip equal to 15% of the total fare.If the driver is especially helpful or has got you to your destination more quickly than expected, give a 20% tip.
Hotel bellboys expect a $1 tip for helping you with your bags.If you order room service, the tip is included in the bill.Coat checkroom attendants expect $ 1 per coat.Hairdressers and barbers expect a tip of 15% of the bill.Parking attendants expect a $ 1 tip.
Federal regulations prohibit letter carriers from accepting cash gifts in any amount, or gifts worth $ 20 or more from customers.
If you are in doubt, ask whether it is appropriate to tip or whether a tip is included in the bill.Bribery(贿赂)is not considered appropriate and often illegal.Attempting to bribe a policeman will certainly get you arrested.