Question

so……that 的前后时态都要一致吗?

Answer 1

你好.只能说是相对一致吧：

1 so hard DOES he work that he has made great progress in English.------一般现在时搭配现在完成时

2 so hard DID he work that he had made great progress in English--------一般过去时搭配过去完成时