This explanation confuse me(u need not and must not forget)where the confusing if i dont repeat the
Your original is trickier because the first verb phrase is really need to forget and the second is must forget, both negated. You’re actually trying to join together two “helper” verbs (need to and must) with a shared target infinitive (forget) which both helper parts are expected to apply to equally. This leads to a slight possible ambiguity which is most easily clarified by repeating the subject.
Moreover, one is a regular tensed verb that takes a to-infinitive complement but the other is an untensed modal verb that takes a complement of a bare infinitive, which is another potential source of confusion.
This makes it hard to find the right place to put the and. You need to put it after the need to because the to shouldn’t really apply to the half of the compound verb with a modal.
You don’t need to — and must not — forget.
This is smoother with a repeated subject, although both of these are somewhat formal or literary:
You neither need to — nor must you — forget.
You don’t need to forget, nor must you.
Plz simplify it to me where the confusing if i dont repeat the subject(you need not to and musnt forget)
And what this sentence mean with(That means that the and does not apply to entire verbal phrase following, only to a piece of it.)