Olympics, held

[joham]

We were told to say these phrases:

the meeting held yesterday
the meeting being held now
the meeting to be held tomorrow

But in Oxford 7 edtion (2005):
Olympic:
the Beijing Olympics, held in 2008

I was surprised to read this phrase, because we were supposed to say '
the Beijing Olympics, to be held in 2008'.

Then according to Oxford 7, we can say 'the meeting held now/tomorrow'?

Could I ask native English teachers to help me please? Thank you in advance.

[rj1948]

We were told to say:

the meeting held yesterday
the meeting being held now
the meeting to be held tomorrow

But in Oxford 7 edtion (2005):
Olympic:
the Beijing Olympics, held in 2008

I was surprised to read this phrase, because we were supposed to say '
the Beijing Olympics, to be held in 2008'.

Then according to Oxford 7, we can say 'the meeting held now/tomorrow'?

Could I ask native English teachers to help me please? Thank you in advance.

These sentences appear to be headlines.
...meeting was held yesterday.
...meeting is being held now.
...meeting is to be tomorrow.

Regards,
rj1948.