will/won't Affirmative Negative I/You/He, etc will clean I/You/He, etc won't up the park tomorrow. help. Interrogative Short answers Will I/you/he, etc Yes, I/you/he, etc will. help? No, l/you/he, etc won't. We use will + infinitive: to make predictions based on what we think/believe will happen in the future. I think the neyy sectory, will pollute the river. to make on-the-spot decisions. We don't need these lights on. I'll switch them off. Time expressions with will: tomorrow, next Monday, next week/month, etc