英语句子However,if they are working,they should stil pay a perce

是动词 which指代tax
towards用法:
1.向,朝;面对
I saw her walking towards the bank.
我看到她朝银行走去.
Jean moved towards the door.
琼向门口走过去.
2.将近;大约
She is towards sixty.
她将近六十了.
We were through with the work towards noon.
将近中午时我们把工作做完了.
As we got towards Chicago traffic became heavier.
当我们快到芝加哥的时候,路上的交通变得更加拥挤.
Towards the end of the term two or three boys caught scarlet fever.
快到学期结束的时候,有两三个男孩子得了猩红热.
3.对于;关于
What is your attitude towards the question?
你对这个问题的态度如何?
4.为;有助于;用于
The two parties are working towards a solution.
双方正努力达成一个解决方案.

动词
对于，朝向

判断是名词还是动词要学会分析句子成分，定语从句也是个成分完整的句子，如果pays不是动词，谁来做谓语呢？

pay是动词
towards是个介词，可以有以下意思：
1.in the direction of sb./sth. 向，朝，对着
I saw her walking towards the bank.
我看到她朝银行走去。
2.getting closer to achieveing sth. 接近，将近（完成某事）
This is the...