Primary Auxiliary Verbs

A rule is applied to convert (to do, to have) sentences into
negative form.

Note :

1. “Not” is added next to the verb while converting “to be” verb sentences into negative form.
2. A different rule is used for “to do” and “to have” verb sentences. “Do” verb is added next to the “subject” to convert into a negative form.

Example:

• I do my work.

1. In this sentence, “do” verb is introduced next to the “subject” to convert the sentence into negative form.
2. The introducing “do” verb should be
   i. based on subject of the sentence.
   ii. based on tense of the sentence.
3. Since the given sentence is in Present tense, (do or does) can be introduced in the sentence.
4. Particularly for the subject “I”, it is confirmed that “do” is the only possible form that can be introduced.
5. This is confirmed by the conjugation,

6. So, (do+not) is introduced next to the subject in the
   sentence.
   I do my work.
   is changed as,
   I (do not) do my work.
7. Since there is a “do” verb in the sentence, it remains the
   same in the negative sentence.

Note :

(“do verb” in the given sentence should remain in the base form when converted into negative sentence.)

• I do my work.
  I (do+not) do my work.
• You do your work.

You (do+not) do your work. (The same rule is applied) In the case of (he/she) as a subject.

• He does his work.

To convert affirmative sentence into negative sentence introduction of “do verb” should be based on the subject and tense of the sentence.

1. According to the subject “he”, “does” should be introduced. (In conjugation, the combination is “he does” and not as “he do”.
2. “Does+not” is introduced next to the subject of the sentence to convert into negative sentence.
   He (does+not) do his work.
3. The verb that exists in the sentence as “does” should be changed into base form as “do” when the sentence is
   converted into negative form.

Note:

1. In “to be” verb sentences, “not” is added next to the primary auxiliary verb to convert the sentences into negative form.
2. For “to do” verb sentences, the negative sentence should be built as follows:

Example:

• I do my work.
  I do not do my work.
• She does her homework.
  She does not do her homework.

Rule :

1. First, the subject should be checked whether it is “I or You or He or We”.
2. Then, the tense should be checked, whether it is Present or Past. Here, the sentences are in Present Tense.
3. Now, according to Present tense, “to do” verb is introduced and can take the form either as (do or does).
4. In the first example (I do my work), the subject is “I”.
   Based on the subject “I”, “do” is introduced next to the subject and “not” is added to it.
   I (do+not).
5. The “do” verb that exists in the sentence should remain the same.
   i. I do my work.
   I (do+not) do my work.
6. In the second example (she does her homework), the subject is “she”. According to the subject “she”, “does” can be introduced next to the subject of the sentence and “not” is added to it.
   She (does+not).
7. The verb “does” in the sentence should be changed into the base form as “do”.
   ii. She does her work.
   She (does+not) do her work.