Must or Have to?

From today, I will start my little tutorials in English.

Our first lesson is about Must and Have to?

When do we use these English modals?

1. Must is a strong order
Like when a mother tells her son to stop playing.
Mother : Hiro, stop playing! You must study now!
Hiro : Ok mom.
* Hiro needs to do it because his mother will get angry.

2. Have to tells about a duty
Like when a sister tells her brother to stop playing because mother will get angry.
Sister : Hiro, stop playing! You have to study now. If not, mom will get angry.
Hiro : Ok.
* Hiro needs to do it because another person (not Sister) will get angry.

Another example:

Daisuke: You have to get a high TOEIC score to enter that company.
Masahiro: I see. I need to study hard.
* Masahiro needs to do it because the company (not Daisuke) will not accept him.




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