Question

If you _____ your homework, you can go out to play football.

有人说主句是将来时，哪里判断出将来时，you can go out to play football.这句是情态动词啊，If后面是从句对不对？

Answer 1

if从句永远不可以用将来时。主将从现。If you have finished your homework，you can go out to play football。

Answer 2

if后是条件从句，
空格填：finish
主句发生在从句之后。