Question

he said that he will come tomorrow. (correct the sentence)

Answer 1

He said that he would come tomorrow.

Answer 2

In the given sentence ‘’would’’ will be used in place of ‘’will’’. In the given sentence first part of phrase is past and second part of sentence is in future. Therefore, for a correct form of sentence past and future tense should not come together in a same sentence. Therefore, in place of ‘’will’’ word ‘’would’’ will be used and this will make this sentence grammatically correct. If in one sentence ‘’said’’ and ‘’will’’ is used it will mix up tense that will make this sentence grammatically wrong.