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Hello, teachers,

I'd like to pinpoint the exact difference between the 2 above.

1. "I don't have to leave before 10" means "nobody and nothing obliges me to..." = external obligation
2. "I need not leave before 10" means 'there's no need FOR ME, I won't gain anything by..."

Is it about it?
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Comments  
All I see is that (1) is less formal, Pieanne.
Is it the same for the questions?
1. Do I have to get up etc... ?
2. Need I get up etc... ?
Students: We have free audio pronunciation exercises.
For me, yes.
Thanks, Mr M. It sure helps clarify things when I have to teach that to my students.
I must admit, I do myself get a sense of 'internal necessity' (needn't) versus 'external necessity' (don't have to); though 'don't have to' seems to cover both:

1. You didn't need to do that.
2. You needn't have done that, you know.
3. You don't have to do that if you don't want to. Just say no.
4. You don't have to do that if you don't want to. No one's forcing you.

Sorry to murk-ify things again. It may just be BrE.

MrP
Students: Are you brave enough to let our tutors analyse your pronunciation?
Could I answer as follows?
1. Yes I needed to take that money, for I've got to pay my wanadoo bill.
2. Gee, I did that to please you...
3. /4. Yes, I have to watch TV all night long, because tomorrow we're having a lesson on media language.
They seem OK to me, though the second answer doesn't seem to imply necessity either self-imposed or external.
Or maybe...

1.
A: '...Anyway, I just wanted to say: I'm very sorry. And just to show how sorry I am...' {produces expensive gift}
B: {small gasp} 'You didn't need to do that!...'

2.
A: '...Anyway, thank you very much for the loan. I've had it dry-cleaned...' {returns item}
B: 'Oh, you needn't have done that...'

3.
A: '...And at 5o/c, when everyone else has gone home, I'm still sitting there typing. Last night he came out at ten past five with a whole pile of letters, expecting me to do them there and then and get them in the post! Can you believe it!'
B: 'Well, you don't have to stay if you don't want to, you know. Just say no...'

4.
A: 'Well, I suppose I'd better mow that lawn.'
B: 'Well, you don't have to do it if you don't want to, you know. Nobody's forcing you...'

(I don't much care for these domestic arguments.)

MrP
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