Question

change from direct to indirect speech" lewis has won the competition "!announce Mr Johnson​

Answer 1

Answer:

Mr. Johnson announced that Lewis had won the competition.

If reporting verb i.e announce is in past tense, this answer is right. If not, this answer isn't right.

Answer 2

Answer:

Mr Johnson announce that Lewis has won the competition.[There is no change in the indirect form because the reported verb"announce" is in present form]