You will bo given a raise after a three-month probation period.

三个月的试用期结束后你的薪资会得到提升。

How long is my probation? 

试用期有多久?

Three months. And you will be given a raise after that.

三个月，而且之后还会加薪。

Your salary includes a base pay and bonuses. 

你的薪资包括基本工资和奖金。

Your salary includes a base pay and bonuses. We can manage a starting salary at 1,500 RMB.

你的薪资包括基本工资和奖金。起薪我们只能定到1500元。

So I work on commission.

也就是说要按业绩提成了。