Discuss negation in English language.a detail answer with examples

In English, in order to express negation, one forms a
negative sentence by adding the word "not" to the positive sentence. Often, the
auxiliary verb "do" is required to express negation.

For
example:  WE SING SONGS (positive sentence), WE DO NOT SING SONGS (negative sentence) -
requires auxiliary verb "do"

For example: SHE IS PRETTY
(positive sentence), SHE IS NOT PRETTY (negative sentence) - does not require auxiliary
verb "do"

Depending on the tense of the sentence, "do" must
be conjugated to match the tense of the main verb in the positive sentence. For
example:

I dance - present tense, positive
sentence

I do not dance - present tense, negative
sentence...

BUT

I danced  -
past tense, positive sentence

I did not dance - past tense,
positive sentence - in this case, the auxiliary verb "do" is conjugated into the past
tense, which is "did"

Here are some examples of negation in
the six main tenses of English:

I dance, I do not dance -
present tense

I danced, I did not dance - past
tense

I will dance, I will not dance - future
tense

I have danced, I have not danced - present perfect
tense

I had danced, I had not danced - past perfect
tense

I will have danced, I will not have danced - future
perfect

(note that in the last 3 tenses, a form of "do" is
not used because there is already an auxiliary verb. To form the perfect tenses in
English, we use "have, has or had" as an auxiliary
verb).

There are also these
forms:

I am dancing, I am not dancing (present
progressive)

I was dancing, I was not dancing (past
progressive)

I will be dancing, I will not be dancing
(future progressive)

I have been dancing, I have not been
dancing (present perfect progressive)

I had been dancing, I
had not been dancing (past perfect progressive)

I will have
been dancing, I will not have been dancing (future perfect
progressive)

Complicated? Ha
ha!

English also uses other words to express the idea of
negation - words such as "no" or "neither" or "nor" or "never" or"seldom" or "hardly",
etc. These are called "negative adverbs" and can also be used to create the idea of
negation. For example:

She is no friend of
mine.

We are neither hot nor
cold.

He never answers.

He
seldom visits

She hardly
speaks

I rarely dance.