The difference between MUST and HAVE TO
In this complete tutorial for beginners’ learners are going to learn the difference between “must” vs “have to”, so we’re comparing “must” with “have to”.
Let’s look at these 2 example sentences:
I have to hand in reports every week.
I must buy some mangoes.
“have to” and “must” both express obligations, but there’s a subtle difference. There is a small difference between the meaning of “have to” and “must” and it is a different type of obligation.
“have to” expresses objective obligation and “must” expresses subjective obligation. So, What’s the difference? I’m going to explain each of this in more detail.
Let’s start with;
“have to”- form and structure
Subject + have (in the correct form) + infinitive
Present simple | Past simple | Future simple |
I have to work | I had to work | I will have to work |
You have to work | You had to work | You will have to work |
He / she has to work | He / she had to work | He / she will have to work |
We have to work | We had to work | We will have to work |
You have to work | You had to work | You will have to work |
They have to work | They had to work | They will have to work |
“have to”- meaning
“have to” expresses objective obligation. The obligation is external. The obligation comes from someone or something else, and its often a law, a legal requirement or a rule or an instruction.
Examples:
“I have to mop the floor. My mother wants me to”. (Mother says, its necessary)
In Thailand, you have to drive on the left.
You have to wear gloves when you clean the bathroom.
“must” – form and structure
Subject + “must” + base form of the verb
Imust help
Youmust help
He / she / must help
Wemust help
Youmust help
Theymust help
We use must to express present or future obligation.
Examples:
I must help my mum with the housework.
Tim must repeat the exam tomorrow.
We do not use must in the past.
must – meaning
“must” expresses subjective obligation.
“must” expresses personal or internal obligation.
It’s an obligation imposed by the speaker.
Examples:
We must be kind to others.
She must clean her room.
must not
Subject + “must not” + base form of the verb
We use “must not” for something that is not allowed or permitted.
The meaning can be objective.
Examples:
People must not pollute the water.
Or subjective:
I mustn’t be late for school.
This example is in contracted form, this is very common. This is a contracted form of “must not” so we replace an apostrophe for the letter that we omit which is letter “o”.
“I mustn’t be late for school”. So, again this is not a real obligation, it is an internal personal decision to change a habit, so this is obviously subjective. Nobody is instructing him that he mustn’t be late for school. It’s his personal decision. Alright?
So there we are I hope you understand now the difference between “have to” and “must” and use them correctly.
Downloadable Material
Here’s the downloadable material of Tutorial on MUST vs HAVE TO here.
For more readings
- Question Tags: Basic Rules
- Present perfect tense / Part 1 -form
- Irregular Nouns in the Plural / English grammar rules
- Quiet or quite / Confusing English words
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