Translation of "Tag" in Chinese

I'm going to run a couple of errands. Wanna tag along?

我要去购物。你要跟着来吗？

I attached my name-tag to my baggage, but it soon came off.

我在我的行李上附上了有我名字的標籤, 但是它很快就剝落了。

As he looked through the store window, Dima's eyes widened as they fell upon a gorgeous black suit, and then widened even more when he noticed the 3,000,000.99 BYR price tag.

當狄馬透過店外的窗子，看見裏面一件華麗絕倫的黑色西裝時，他不禁睜大了眼睛；接著，當他發現價錢牌上寫著「3,000,000.99 BYR」的時候，他的眼睛就睜得更大了。

- Can I come?
- May I come, too?
- Can I go, too?
- Can I come, too?
- Is it OK if I come?
- Is it all right if I come?
- May I go, too?
- Is it OK if I go?
- Is it all right if I go?
- Can I tag along?

我可以去吗？