When to add do and do in English

Simple present tense.

Use do and does, e.g. always, usually, often, every day(year).

First person. Second person and noun plural.

Use do (i, you, we, they, cats, dogs, s, etc.).

The third person and noun singular are used as does (he, she, it, cat, dog, etc.).

Examples of do and do usages are as follows:

1）i do my homework on sunday.

2）you do your homework on sunday.

3）he does his homework on sunday.

4）she does her homework on sunday.

In general interrogative sentences, the auxiliary verb advances, such as: you

playgames.Change the general question sentence to become: doyouplay

games?

There are times when emphasis is expressed, such as i

Playgames, emphasis on the time i

doplay

games.

Do when the subject is a third person singular (e.g., he, she, student) and do when the subject is not a third person singular

do and does asSubstantive verbs, both mean "do", do used forFirst person. and the third person plural number i, you, we, used in the third person singular he, she, it. Both "do" and "does" denote the present tense of the verb "do".

For example: we usually do our homework in the afternoon

We usually do our homework in the afternoon.

he does his homework in the evening.

He does his homework at night.

he does his homework in the evening.If it becomes a negative sentence, it becomes: he doesn't't do his homework in the evening.

An auxiliary verb is added here.

doesn't, and the original verb does has become the original form do.

The specific difference between does and do.

1. The meaning is different.

do means: to do, to do, to do (something); Do it (somehow); Let's go; Manifestation; (When inquiring or talking) progress, conduct.

does meaning: used to form negative sentences and interrogative sentences before substantive verbs; Constitute additional interrogative sentences.

Substitute for substantive verbs to avoid repetition.

2. Different usage.

Do Usage: Do is used to form the simple present tense.

and the interrogative or negative tense in the simple past tense, followed by the original verb. In the interrogation, do is grammatically needed, but it is customary to omit (sometimes with a subject), especially in colloquial language.

does usage: as a transitive verb.

Nouns, pronouns, and gerunds can be used.

The clause is used as the object, and the cognate object can also be connected; It can also be followed by a double object (the indirect object of which can be transformed into the object of the preposition to).

3. The focus is different.

Do Focus: Do is the original form of the verb, which is used in the first person, the plural number of the third person (i you we they).

DOES Focus: DOES for the third person singular (he she it) DOES for the third person singular number.

Difference and usage of do and dos.

1. As a verb in the real sense of the town and demolition, the verb of action is the meaning of "do", both of which are in the general present tense, the subject is the third person singular with does, and the rest of the person with do;

2. As an auxiliary empty positive word, it has no meaning and constitutes an interrogative sentence, the subject is the third person singular with does, the rest of the personal with do, and the following verbs are all in the original form.

As. 1). i / we / they do my homework every day .(do is a substantive verb).

I we do their homework every day.

2). he /she does his / her homework every day .(御財jube does is a real verb).

He and she do their homework every day.

3). do you get up at seven every day ?(do is an auxiliary verb).

Do you wake up at 7 o'clock every day?

4). does jim get up at seven every day ?(does is an auxiliary verb).

Does Jim wake up at 7 o'clock every day?

5). what time does he go to school every day ?(does is an auxiliary verb).

What time does he go to school every day?

Do and does are used as follows: do is used to form the interrogative or negative tense in the simple present tense and the simple past tense, followed by the original verb; The do is used to express the same subject Min Han has done or mentioned the action before, and the object and adverbial involved in the verb can also be used does, and the noun, pronoun, gerund, and clause can be used as the object when making a transitive verb, and the double object can also be used. The auxiliary verbs do and do can be used for sentence transformation, do is placed at the beginning of the sentence when changing the interrogative sentence, and does is placed at the front of the sentence.

It should be noted that there is no need to create an auxiliary verb when there is a verb "be is are" in the sentence.