This is the car that/which you paid for a high price.
1 这句话为什么可以改写成This is the car for which you paid a high price. 就是为什么paid for的for能提到which前?
2 那这句话可以改写成This is the car that /which you paid a high price for 吗?
This is the car that/which you paid for a high price. (错误)
This is the car that / which you paid a high price for. (正确)
This is the car for which you paid a high price. (正确)
This is the car for that you paid a high price .(错误)
【搭配关系】pay a high price for something