sang的原形: sing，中文是唱。
Don't butcher that song by singing off key .
别唱走调而糟蹋了那首歌。
No one makes singing stocks from a big log .
没有人用大圆木做击棒啊。
She can 't sing . so do n't press her to ..
她不会唱歌，就别难为她了。
She will sing if we put the pressure on .
我们给她些压力她就会讲出来。
The boy sat on the perch and sang lustily .
那个男孩坐在高处起劲地唱。
