Time flies,and if you wait,all that happens is that you're getting older.

We have been learning for years.Along the way,we've learned that it no use crying for the spilt milk.Life is fair,and she never cheats anyone unless someone cheats her.

 However,there're so many times they say“If only I were younger,I would…”filled in the air when they complain about the time   wanted.Obviously,they will do what they should have done before long.How ridiculous it is!And what about us?What would we do when we're full of energy?Shall we cherish the most expensive thing in the world?

As is known to us all,Hellen Keller,a famous author who is disabled.Unfortunately,this vivid world seems to be a black hole to her.But she doesn't lose heart,on the contray,she just lives and accepts all the dusk.There comes hope with a sweet smile and says softly“There is joy in forgetting oneself.”So she enjoys smiling at the warm sunshine,reading books and writing.Of course,she makes full use of time to enrich her life.But what should we do towards time?

People may have different attitudes towards it.Some think it's never to be used up.If today ends,there is still tomorrow.So they don't think it necessary to finish today'work ,and just put it off until tomorrow.Finally,they will succeed in nothing.Another sort of people don't think this way.They know the limitation of time.An average person may have a life span of 70 years,but much of which has to ba spent sleeling,eating and doing other matters.What we can use to do something meaningful is so limited.And time spent on study and work takes up only a small part.Thus,work hard and never leave today's   work till tomorrow.

Remember:Time and tide waits for no man!