If I (wake up) late, I (be) late for school.
If I wake up late, I will be late for school.
If there (not be) anything interesting on TV, I (read) a book.
If there is nothing on TV, I'll read a book.
If I (go) out tonight, I (go) to the movie theater.
If I go out tonight, I'll go to the movie theater.
If you don't bring an umbrella...
If I eat too many chips...
If children (not/eat) well, they (not/be) healthy.
If children don't eat well, they won't be healthy.
If you (get) back late, I (be) angry.
If you get back late, I'll be angry.
If the weather (not/get better), we (not/have) a picnic.
If the weather doesn't get better, we won't have a picnic
If he (come) to the party, I (be) surprised.
If he comes to the party, I'll be surprised.
If you don't study for the quiz...
...I will play video games.
If I (not go) to bed early, I (be) tired tomorrow.
If I don't go to bed early, I'll be tired tomorrow.
...I will clean my room.
I (call) you if I (not forget).
I will call you if I don't forget.
If we (wait) here, we (be) late.
If we wait here, we'll be late.
If you (not/want) to go out, I (can/cook) dinner at home.
If you don't want to go out, I can cook dinner at home.
If we (win) the game on Saturday, we (be )the best team in town.
If we win the game on Saturday, we will be the best team in town.
I (go) to the doctor's if I (not feel) well.
I will go to the doctor's if I don't feel well.
If we (go) on holiday this summer, we (go) to Japan.
If we go on holiday this summer, we'll go to Japan.
He (not/get) a better grade if he (not/pass) that exam.
He won't get a better grade if he doesn't pass that exam.