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green light
I don’t know!
What is it for? (这个什么作用？)
yellow light
Slow down and stop at a yellow light.
Don't go at a yellow light. You must （必须）slow down and stop.
slow down慢下来
[sl??] [da?n]
stop 停下
[st?p]
Slow down, slow down!
He must __________.
slow down
Look! A kid!
Stop!
Look! A kid!
Stop!
Thank you!
red light
Stop and wait at a red light
Don't go at a red light. You must （必须）stop and wait.
stop 停下
wait 等待
[we?t]
green light
Go at a green light.
go 走
Go at a green light.
绿灯行
traffic