Only direct speech should go inside inverted commas.

只有直接引语应放在引号内。

The manager showed us to our 'luxury apartment', in inverted commas.

经理带我们去看了我们所谓的“豪华单元”。

You can also avoid using punctuation like inverted commas.

你还可以避免使用像引号之类的标点符号。

The word here is put in inverted commas to mean something special.

这个词被引起来了，它有特殊的意义。

I write 'opponent' like that (in inverted commas) because this is not a fight.

我用引号写“对手”，是因为这里没有战斗。