结构练习：找s，找ed，找ing，简称Seding
结构统计：s___次，ed___次，ing___次
Tyger建议：大屏电视或投影，学员看到s，ed，或ing，立刻举手，让学员们感受到，结构无处不在。
Hello darkness, my old friend,
I've come to talk with you again,
Because a vision softly creeping,
Left its seeds while I was sleeping,
And the vision that was planted in my brain
Still remains
Within the sound of silence.
In restless dreams I walk alone
Narrow streets of cobblestone,
'Neath the halo of a street lamp,
I turned my collar to the cold and damp
When my eyes were stabbed by the flash of a neon light
That split the night
And touched the sound of silence.
And in the naked light I saw
Ten thousand people, maybe more.
People talking without speaking,
People hearing without listening,
People writing songs that voices never share
And no one dared
Disturb the sound of silence.
"Fools" said I,"You do not know
Silence like a cancer grows.
Hear my words that I might teach you,
Take my arms that I might reach you."
But my words like silent raindrops fell,
And echoed
In the wells of silence
And the people bowed and prayed
To the neon god they made.
And the sign flashed out its warning,
In the words that it was forming.
And the signs said, 'The words of the prophets are written on the subway walls
And tenement halls.
And whispered in the sounds of silence.
