Wind is a powerful force in nature.Wind energy may cause the great waves in the world's oceans.Its power can be used to create electricity for cities and the countryside.
    Wind can also power many expressions in American English.Let's start with a simple one.If you run like the wind，you can run very fast.After running，sometimes you can be full of energy.
    If you are doing something difficult，it is good to have the wind at your back，for example，when you are sailjye.aig.In this way，it is easier to go forward.
    Knowing the direction of the wind is the most important part of sailing.When wind fills a sail，it makes the boat go faster.If you take the wind out of someone's sails，you prevent them from reaching their goals.
    Let's turn from sailing to music.Many songwriters use the image of wind in their songs.If an idea is blowing in the wind，it is under discussion but has yet to be decided.When a singer sings "you don't need a weatherman to know which way the wind blows"，he means you know what is going on，and he tells you to trust yourself as you can find something out on your own.
    Now you know which way the wind blows.Then how can you use these expressions properly？First，read them aloud and keep them in mind.Then，practice using them and test yourself.You know，practice makes perfect.

The power of wind
A powerful force in nature	Wind may lead to great waves in the world's oceans.It can also be used to（1） create electricity create electricity .
（2） Expressions Expressions with "wind"	About running：*A person who runs like the wind is a very（3） fast fast runner. *When a runner gets a second wind after running，the runner is full of energy again.
	About sailing：*When you are sailing，it's easier to go forward with the wind at your back. *When a sail is full of wind，the boat will go faster. *People prevent you from reaching your goal when they take the wind out of your sail.
	About music：*The image of wind is used by many songwriters.When an idea is blowing in the wind，people need to（4） discuss discuss it. *When you know which way the wind blows，you know what is going on.
Advice on learning	*Read them aloud and （5） remember remember them. *Practice using them and test yourself.