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Must-mustn't-have to-don't haveto
 

Must-mustn't-have to-don't haveto

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    Must-mustn't-have to-don't haveto Must-mustn't-have to-don't haveto Presentation Transcript

    • “MUST”OR“HAVE TO”?
    • MUST… express a strong “personal-internal obligation”.Itmeans that it comes inside and the speaker almostcertainly agrees with the obligation.I must go to bed earlier.*Here, speaker believes that going to bedearlier is a good choice. Nobody forces thespeaker to go to bed earlier.
    • HAVE TO… expresses a strong “external obligation”. Itmeans that it comes from outside, from a kind ofauthority.My boss is very strict. I have to arrive atwork at 9 sharp.*Here, arriving at work is not what thespeaker believes or thinks as the rightchoice. His boss forces him to be at workon time.
    • What is the differencebetween the sentencesbelow?1. I must stay at school after theclasses for extra studies.2. I have to stay at school after theclasses for extra studies.
    • Let’s try some.1.They need this report urgently.I ……………… finish it now.2.I ……………… arrive early every morning.Because I like to start working early in themorning .3.Jim ……………… go to work on foot. Hethinks walking to work every morning ishealthier.4.She …………… answer the phone.Thats herjob.have tomustmusthas to
    • 5."You ……………… do your homework" said theteacher.6."We ……………… invite the Smiths for dinner oneday" said my wife.7.Tom ……………… leave home at 7.30 to get toschool at 9.8."I ……………… hurry or Ill miss my bus!"9.You ……………… attend all personnel meetings - itswritten in your contract.10."I ……………… call my sister - its her birthdaytoday."have tomusthas tohave tohave tohave to
    • “MUSTN’T”OR“DON’T HAVE TO ”?
    • MUSTN’T...expresses that something or doingsomething is forbidden.It meansprohibition.Students mustn’t drink coffee duringthe lesson.We mustn’t talk about it.It is asecret.
    • DON’T HAVE TO… expresses that there is no obligation ornecessity.It means doing something is notnecessary. Dont have to expresses somethingthat is not required. However, if the person maychoose to do so if he or she wants.I don’t have to study for the universityexam.Because I have already graduatedfrom one.
    • What is the differencebetween the sentencesbelow?* She has to write a report of themeeting.* She doesn’t have to write a reportof the meeting.Because she is the secretary andthis is her job.But she can do if shewants.
    • CORRECT THEMISTAKES• Children dont have to play with fire.• I must go to work every day.• Its my job! She doesnt have to go to that meeting. Shellruin it!• Have you to go to classes on Thursday?• She hasnt to do homework next week.• Ill must hurry up if I dont want to miss the bus.• You mustnt come if you dont want to meet him. I justthought it would be a good idea.• My daughter isnt having to attend class this afternoon.• I has to help him every day at work.
    • Let’s Do the Quiz!http://www.englishclub.com/grammar/verbs-modals-have-to-must-not-quiz.htmhttp://www.englishgrammarsecrets.com/musthaveto/exercise7.htmlhttp://www.eclecticenglish.com/grammar/HaveTo1A.html