那句歌词没有错 meant 这里是mean的过去式 也就是这个句子的谓语动词，所以不需要另外添加系动词了。
字典上的解释：
4、To have as a purpose or an intention; intend:
意欲；打算：做为目的或意图而具有；计划：
（例句）I meant to go running this morning, but I overslept.
我今天早晨本打算去跑步，但是我睡过头了
你说的加系动词的情况也有 意思不太一样 以下是柯林斯高级英语学习词典的解释 自己慢慢体会下哈
meant /m'ent/
1
Meant is the past tense and past participle of mean.
2 [ADJ] v-link ADJ to-inf
You use meant to to say that something or someone was intended to be or do a particular thing, especially when they have failed to be or do it.
I can't say any more, it's meant to be a big secret...
I'm meant to be on holiday.
3 [ADJ] v-link ADJ for n
If something is meant for particular people or for a particular situation, it is intended for those people or for that situation.
Fairy tales weren't just meant for children...
The seeds were not meant for human consumption...
4 [PHRASE]
If you say that something is meant to happen, you mean that it is expected to happen or that it ought to happen.
Parties are meant to be fun.
5 [PHRASE]
If you say that something is meant to have a particular quality or characteristic, you mean that it has a reputation for being like that.
Beaujolais is meant to be a really good wine.