請幫我改下o的英文既應對,唔該晒!!!

楊生去左中環開會,他今天不會回公司.
Mr Yeung is gone for the meeting in Central.I'm afraid he will not be in his office today

(某同事過來找我老闆)楊生現在開會,須唔須要我現在通知他?定是我請他開完會後找你?
Mr Yeung is in the middle of a meeting right now. Do you need to see him right now?Or I'll just leave him a message?

(幫老細打電話比另一公司老細)你好,我是Mandy.我老闆Raymond Yeung 想同Silina Tse講電話.
Good morning(depends on what time is it).I am from the XXX Company.My boss--Mr Rayond Yeung would like to talk to Ms Silina Chan please.

Mr. Yeung is out for a meeting at Central. I'm afraid he may not be back to the office today.

Mr. Yeung is in a meeting at the moment. Shall I notice him now or ask him to call on you after the meeting?

Good morning! This is Mandy of ABC Company. My boss, Mr. Raymond Yeung, would like to speak with Ms Silina Chan, please.

2007-02-28 00:58:08 補充：
Sorry 應該是 in CentralMr. Yeung is out for a meeting in Central. I'm afraid he may not be back to the office today.

Mr. Yeung is out for a meeting in Central. He may not be back today.

Mr. Yeung is in the meeting at this moment, Do you want me to notice him? or after the meeting?

Hello! This is Mandy, a secretary for Raymond Yeung , ABC company, my boss would like to talk with Selina Chan in line.

Simply from correcting point of view, i suggest:

1) Mr Yeung is out for a meeting in Central. I'm afraid he will not be back to the office today.

2) Mr Yeung is in a meeting right now. Do I need to inform him now? Or shall I ask him to get back to you after the meeting?

3) Hello! It's Mandy calling from ABC Company. My boss, Mr Raymond Yeung, would like to talk to Ms Silina Chan.