The main differences between must and have to are:
Must means "really should or else it will be bad for you", it expresses an obligation forced by the speaker.
Have / Has to expresses general obligations. When we are talking about another person's obligation we use have to, too. We use have to when the obligation comes from outside.
See Modals Chart / Modals Exercises
|Affirmative Form||Subject + must + verb + complement|
|You must come home before 8 o'clock.|
|Negative Form||Subject + mustn't + verb + complement|
|You mustn't come home before 8 o'clock.|
|Question Form||Must + subject + verb + complement ?|
|Must you come home before 8 o'clock?|
|Negative Question Form||Mustn't + subject + verb + complement ?|
|Mustn't you come home before 8 o'clock?|
|Affirmative Form||Subject + has to / have to + verb + complement|
|He has to take his medicine.|
|Negative Form||Subject + don't have to / doesn't have to + verb + complement.|
|He doesn't have to take his medicine.|
|Question Form||Does / Do + subject + have to + verb + complement ?|
|Does he have to take his medicine?|
|Negative Question||Doesn't / Don't + subject + have to + verb + complement ?|
|Doesn't he have to take his medicine?|
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Both direct speech and reported speech forms of the same sentences to practice-- Try converting from direct to indirect speech.
Reported speech complex sentence examples to practice-- See both direct speech and indirect speech forms of the same sentences
Reported speech questions with Yes/No questions exercise - Convert Yes/No questions into indirect speech statements