have to + Verb heißt: Du musst es tun. Es ist eine Regel, oder du hast keine andere Wahl.
have to + Verb
I have to be at school at eight.
We have to wear a uniform at work.
Not "I have be at school at eight." — say "I have to be at school at eight.". Sag have to – mit to – vor dem Verb.
Probier es aus: Amina: Can I leave these boxes in the hall? Lars: No. The landlord checks the halls every week. We ___ keep them in our apartments. Wähle aus, was Lars sagt. (have / have to / don't have to) Antwort: have to — Die Vermieterin kontrolliert die Flure, also müssen sie die Kisten in ihren Wohnungen lassen – sie haben keine Wahl. Lars sagt have to + keep. Bei have allein fehlt to, und mit don't have to wäre es freiwillig.
Bei he, she, it: has to
Bei he, she und it sagst du has to.
He has to leave at seven.
The doctor has to see ten people today.
Not "He have to leave at seven." — say "He has to leave at seven.". Bei he, she und it sagst du has to.
Probier es aus: Amina: Why is the man in 2B so busy? Lars: He ___ move out on Friday. Wähle aus, was Lars sagt. (have to / has / has to) Antwort: has to — Bei he sagst du has to + move. have to gehört zu I, you, we und they, und bei has allein fehlt to.
don't have to + Verb
don't have to + Verb heißt: Es ist keine Regel. Du kannst es machen – oder auch nicht.
You don't have to call me. I'm fine.
We don't have to cook tonight.
Probier es aus: Amina: The library closes at eight. Is my book late? Lars: No. You ___ take it back today. You have two weeks. Wähle aus, was Lars sagt. (don't have to / have to / doesn't have to) Antwort: don't have to — Amina hat zwei Wochen Zeit, also kann sie selbst entscheiden, ob sie das Buch heute zurückbringt: don't have to + take. Mit have to wäre heute der letzte Tag, und doesn't have to gehört zu he, she und it, nicht zu you.
Bei he, she, it: doesn't have to
Bei he, she und it sagst du doesn't have to.
She doesn't have to wear a uniform.
He doesn't have to work on Friday.
Not "She don't have to go." — say "She doesn't have to go.". Bei he, she und it sagst du doesn't have to.
Probier es aus: Amina: Does your friend go to a classroom for her English class? Lars: No. She ___ go. The class is online. Wähle aus, was Lars sagt. (don't have to / doesn't have to / has to) Antwort: doesn't have to — Der Kurs ist online, also muss sie nicht in einen Klassenraum, und bei she sagst du doesn't have to. don't have to gehört zu I, you, we und they, und mit has to müsste sie in den Klassenraum gehen.
Fragen: Do you have to? Does he have to?
Wenn du nach einer Regel fragst, sagst du Do you have to + Verb? Bei he, she und it sagst du Does he have to + Verb?
Do I have to buy a ticket? Yes, you do.
Does she have to study tonight? No, she doesn't.
Not "Does he has to go?" — say "Does he have to go?". Nach does sagst du have to, nicht has to.
Probier es aus: Amina: ___ I have to take off my shoes? Lars: Yes, please. The floor is new. Wähle Aminas erstes Wort. (Does / Am / Do) Antwort: Do — Bei I beginnt eine Frage nach einer Regel mit Do: Do I have to take them off? Does gehört zu he, she und it, und Am passt nicht zu have to.
Eine Regel oder eine Wahl
Musst du es tun? Dann sag have to. Kannst du wählen? Dann sag don't have to.
At this school, you have to wear a uniform.
You don't have to wear a tie, but you can.
Probier es aus: Amina: Can I go home now? Lars: Sure. You ___ stay. We can do it tomorrow. Wähle aus, was Lars sagt. (have to / don't have to / has to) Antwort: don't have to — Sie können es morgen machen, also darf Amina selbst entscheiden, ob sie bleibt: don't have to + stay. Mit have to müsste sie heute Abend bleiben, und has to gehört zu he, she und it.