# data[].attributes.body
Use: you have to use "must" when you are talking about moral obligations, advices, strong reccomandations or when you express certainty.

Form: + Subject + must + base form ...

- Subject + mustn't + base form ...

? Must + subject + base form ...

Ex. You mustn't use your smartphone during the lesson

# data[].attributes.body
Use: when you want to say a possibility

Form: + Subject + can + base form ...

- Subject + can't + base form ...

? Can + subject + base form ...?

Ex. I can play the guitar

# data[].attributes.body
give advice or recommendations, express obligation or duty, suggest something is likely or expected:

# data[].attributes.body
Use: say something that you should definetly do

Form: + had better

- had better not

? x

Ex: You'd better go to the doctor

# data[].attributes.body
Use: when you want to express a possibility

Form: + Subject + may/might + base form ...

- Subject + may/might + not + base form

? May/might + subject + base form ...?

Ex. I may not go to the gym today.

# data[].attributes.body
Form: + subj + have to + base form

- subj + don't have to

? Do + subj + have to

Ex: You have to go home

# data[].attributes.body
USES: Predictions for the future, promises, spontaneous decisions, and for offers and requests.

Es. i will go to the seaside this summer

# data[].attributes.body
Form: + Subj + need

- Subj + do not need

? Do + subj + need

Ex: I need more water

# data[].attributes.body
Use: habits in the past

Form: + Subject + used to + base form ...

- Subject + didn't + use to + base form ...

? Did + subject + use to + base form ...?

Es. I used to watch a tv serie called H2O