如：This way, please. = Go this way, please.
Be a good boy!
Don't forget me!
Let me help you.等
Nowadays,people in many big cities are complaining about the heavy traffic.
It has seriously influenced people's daily life and economic development.To
solve the problem,some pieces of advice are put forward.Some people suggest
that more streets and roads should be built.In this way,
the traffic density can be redncedi hence speeding up the flow of buses and
cars.But the new roads and streets will be filled with many cars and buses
Go and wash your hands.
Be quiet, please.（Please be quiet.）
Be kind to our sister.
Watch your steps.
Keep off the grass.