What is the difference between the sentences in the following pairs if they are grammatically correct? Please rephrase this question for me if it is not well-presented.
Need you do that?
Do you need to do that?
You need not do that.
You don't need to do that.
I understand "need do" is not grammatical because need is only used in the negative. Am I right?
healer Need you do that? This is not very natural in modern everyday English. It sounds a bit like something out of an old book.
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healerNeed you do that?
This is not very natural in modern everyday English. It sounds a bit like something out of an old book.
healerDo you need to do that?
OK.
healerYou need not do that.
OK. In informal English the contraction "needn't" would be used.