Tom said that he could finish (can finish) the work in two days
原来从句中时态应用can finish,因为主句是过去式,所以从句时态要往前推一格,所以用过去式谢谢，你是英语老师么？那Our English teacher said i __________（不用功）。怎么做？不是Our English teacher said I didn't work hard为什么是didn't不是don't因为主句时态是一般过去时，从句时态要往前推一格的