"Have To" All Forms
- Apr 7
- 3 min read
Updated: Apr 8
When we talk about obligation, the biggest challenge isn't the meaning—it's the mechanics. While words like should or must stay the same, have to changes based on the tense, the person, and whether you are asking a question.
Use this table to see how the auxiliary verbs (do, did, will, have) change to support the main verb.
Tense / Form | Positive (+) | Negative (-) | Question (?) |
Present Simple | I have to / He has to | I don't have to | Do you have to? |
Past Simple | I had to | I didn't have to | Did you have to? |
Future (Will) | I will have to | I won't have to | Will you have to? |
Present Perfect | I have had to | I haven't had to | Have you had to? |
Infinitive | ...to have to | ...not to have to | — |
Gerund (-ing) | ...having to | ...not having to | — |
Comparing Have To with Other Modal Forms
This table compares have to with other modals that express rules or suggestions.
Tense / Form | Must / Have to | Mustn't (Prohibition) | Don't have to (Optional) | Should / Shouldn't |
Present | must / have to | mustn't | don't have to | should(n't) |
Past | had to | — | didn't have to | — |
Future | will have to | — | won't have to | — |
Present Perfect | have had to | — | haven't had to | — |
Infinitive / -ing | to have to / having to | — | not to have to | — |
Exercise 1:
Test your "have to" knowledge.
Exercise 2:
The Digital Nomad’s Tale
Read the story below. Pay close attention to how the bolded forms of "have to" change depending on the time of the action.
When I started my career, I had to work in a gray office every day. I didn't have to wear a suit, but I had to be at my desk by 8:00 AM. One day, I realized I hated having to commute three hours in traffic. I told my boss, "I should look for a remote job."
She warned me, "You mustn't quit without a plan! It's dangerous." I knew she was right, so I waited. I have never had to beg for work before, but starting a business was hard. I had to run to the bank many times for loans.
Now, I am a digital nomad. Next month, I will have to renew my passport before I fly to Bali. The best part? I don't have to wake up early anymore. My only goal now is not to have to check my email every five minutes.
Download Your Free Practice Worksheet
Ready to put these rules into action? We have prepared the Have to & Must - All Forms Worksheet + Exercises with Key available for free download. This resource is designed to help you master the mechanical shifts of have to, must, and should through three targeted sections:
Exercise 1: Focuses on filling in gaps using the correct form of have to based on specific grammatical prompts and situational contexts.
Exercise 2: An expanded challenge to drill positive, negative, and question forms across different tenses like the past, future, and present perfect.
Exercise 3: A mixed-modal review requiring you to choose between must, should, or have to in a variety of real-world scenarios.
Every exercise includes a detailed Answer Key so you can check your work and ensure you are using the correct forms every time. Download your copy now and start practicing!
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