许先生用英语怎么说读

"Xu" is pronounced as "shoo". It is based on the pronunciation of the Chinese characters used to write the name.

Example:

My name is Xu. (我的名字是许。)
Mr. Xu is coming to the meeting. (许先生正在前往会议。)

Note: It is always recommended to check with the person named Xu for their preferred pronunciation in English.