Learn modal verbs for advice and rules. This guide explains how each is used, and when to use them. With clear rules and examples, it helps you speak more accurately and talk about your plans in English.

Modal Verbs for Advice and Rules: Should, Must & Have To

Modal verbs help us talk about rules, advice, and obligations. Three very common modal verbs at B1 level are should, must, and have to. They are especially useful when talking about daily life in Ireland, school rules, and social situations.

Using “Should” for Advice

We use should to give advice or say what we think is a good idea.

例を挙げよう：

• あなた should bring a jacket in Ireland.
• あなた should practise English every day.
• あなた shouldn’t be late for class.

“Should” is not strong. It is friendly and polite.

Using “Must” for Strong Rules

We use must when a rule is very important or comes from the speaker.

例を挙げよう：

• あなた must wear a seatbelt.
• あなた must arrive on time for the exam.
• あなた mustn’t smoke inside buildings.

“Must” sounds strong and serious.

Using “Have To” for External Rules

We use なければならない when the rule comes from another person, system, or law.

例を挙げよう：

• I have to pay my rent this week.
• 学生 have to attend classes regularly.
• 私たち don’t have to work on public holidays.

“Have to” is very common in spoken English.

Must vs Have To

Often, must そして なければならない have similar meanings, but:

• must = personal or strong rule
• なければならない = rule from outside

例を挙げよう：

• I must study tonight. (my decision)
• I have to study tonight. (school rule)

Using Modals in Daily Life

English learners use these modal verbs to talk about:

• school rules
• house rules
• advice for living in Ireland

例を挙げよう：

• あなた should ask if you’re not sure.
• あなた have to show ID sometimes.
• あなた mustn’t forget your umbrella.

Final Tip

用途 should for advice, must for strong rules, and なければならない for official rules. These verbs help your English sound clear and polite.

Learn modal verbs for advice and rules. This guide explains how each is used, and when to use them. With clear rules and examples, it helps you speak more accurately and talk about your plans in English.