SupraEnglish
Grammar
Grammar/Unit 2: Obligation (Must/Have to)

Vocabulary

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Obligation

/ob-li-gay-shun/

"Duty."

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Prohibition

/pro-hi-bish-un/

"Not allowed."

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Forbidden

/for-bid-en/

"Banned."

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Necessary

/nes-uh-ser-ee/

"Needed."

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Optional

/op-shun-al/

"Not required."

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Requirement

/ri-kwyr-ment/

"Rule."

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External

/ek-stur-nal/

"Outside."

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Internal

/in-tur-nal/

"Inside feeling."

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Strict

/strikt/

"Firm."

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Permitted

/per-mit-id/

"Allowed."

Article

You Have To! 👮

  1. Must: Internal feeling or Strong Rule.
    • "I must call my mom." (I feel I need to).
    • "You must wear a seatbelt." (Law).
  2. Have to: External obligation / Facts.
    • "I have to work at 9." (My boss says so).
  3. Mustn't vs Don't Have to (BIG DIFFERENCE!):
    • Mustn't: PROHIBITION. Don't do it! (Forbidden).
    • Don't have to: NO OBLIGATION. You can do it if you want, but you don't need to.
      • "You don't have to come." (It's optional).

Practice

Progress: 0/10
Score: 0
1.

You ___ smoke here. It is illegal.

2.

You ___ buy lunch. I made sandwiches.

3.

I ___ wear a uniform at work (Rule).

4.

Mustn't means...

5.

Don't have to means...

6.

Doctors ___ wash their hands.

7.

Past of Have to:

8.

Past of Must (Obligation):

9.

Tomorrow I ___ get up early.

10.

You ___ be late!

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