Question

求助一个英文问题，谢谢！

请问这句英文因该怎么写最正式。谢谢！

因为王先生在9月29日要参加客户会议，所以他不能来参加当天的培训了。

Answer 1

所谓正式，就是更书面更客气一些：

Sorry that Mr. Wang seems to be not able to attend the training on Sep. 29, because he will have to attend an important clients meeting in the same day.

前面用 not able to 不能，没办法，有点无奈的意思
后面用 have to 不得不，着重强调客观因素，不是主观原因。

Answer 2

因为王先生在9月29日要参加客户会议，所以他不能来参加当天的培训了。
As Mr.Wang is to attend the clients meeting on the 29th of September, he won't be able to come to the day's training course.

Answer 3

Mr Wang needs to attend a meeting with client on Sept 29. Therefore, he cannot join the training on that day.

Because Mr Wang has a client meeting to attend on Sept 29, he cannot come for the training on that day.

Answer 4

Because of Mr.Wang have to attend an important client meeting on Sept. 29th,so that he cannot attend the training that day.

Answer 5

Because Wang in September 29th to attend client meetings, so he cannot attend the training.