It wil be my first time_to go_(go)Beijing next month.

It wil be my first time_to go_(go)Beijing next month.
It wil be my first time_to go_(go)Beijing next month.

It wil be my first time_to go_(go)Beijing next month.
It wil be my first time_to go_(go) to Beijing next month.
加to,这样就对了.

这是正确的。
It's one's first time to do sth. 某人第一次做某事。
为固定句型

对。

句型 It's one's first time to do sth. 某人第一次做某事。

希望我的答案能对你有所帮助吧。O(∩_∩)O~