Expressions
what does it mean？是第三人陈单数的提问;
What do these signs, mean?是用于复数的提问
what does it mean？ What do these signs mean?
它表示什么意思？这些标志标示什么意思？
eg ： It means “No parking.”
小练习 : What do these _____(signs/ sign)mean?
They _____（mean/means）you shouldn’t drink and eat.
signs
mean
