Obligations and Prohibitions kls 8

Senin, 23 September 2019

Kelas VIII G 
Selasa, 24 September 2019
Kelas VIII F 
Kamis, 26 September 2019
Kelas VIII G 
Jumat, 27 September 2019
Kelas VIII F

Obligations  and Prohibitions

When we want o express permisison,  responsabilities,  obligation or prohibition  we use modal verbs.

Have to and must are used to express obligation. Don’t have to is used to express that something is not required  and mustn’t is  used to express prohibition.

Must

Must and mustn’t are the same for all persons. We use must  when we think it is important to  do an action or we give people orders.

• You must be home by eleven
• She must tidy up her room every day

We use must when the obligation comes from the speaker.

• I must go to the doctor, I don’t feel well.
• I must have my homework ready tonight.
• I must stop smoking.

Have to

We use have to when the obligation comes from someone else, not the speaker; for an action that is necessary because of rules.

• We have to be at the airport three hours before the flight leaves.
• At work I have to wear a uniform.
• My father has to pay the rent every month.

Mustn’t

Mustn’t is used to say that something is against the rules or against the law.

• You mustn’t smoke at school.
• You mustn’t use your telephone on a plane

Don’t have to

Don’t have to is used to show that there is no obligation.

• In this restaurant you don’t have to wear a tie.
• My brother doesn’t have to wear uniform at his school.
• We don’t have to get up early on wekeneds.