“tape”作名词讲时是可数名词还是不可数名词?我记得好像两种情况都有呢~顺便举个例子啊~Thanks~

当“胶带”解时，不可数: Why not use the tape for help?
当“录音带”解时，可数：Here are some tapes of my songs.

n.
1.带子,线带;狭布条[C][U]
Please tie the package with tape.
请把这包裹用带子扎起来.
2.(录音或录影)磁带[C][U]
We got all the conversation down on tape.
我们把谈话全部录在磁带上.
3.录音(或影)的磁带[C]
I have a tape of the song.
我有这首歌的录音磁带.
4.【体】(赛跑终点的)线带[the S]
The two runners broke the tape together.
两位赛跑运动员在终点同时撞线.
5.胶布;透明胶纸;绝缘胶布[C][U]
6.(电报)纸带[C][U]
7.卷尺,带尺[C]