Simple present tense

Simple Present Tense
The Simple Present tense is used to describe habitual actions that occur with some frequency and makes no reference to whether it is happening at present.
Example:
-I play tennis.
(He mentions a sport that I do every day and not necessarily what I'm playing right now).

-He works in an office.
(This refers to work that develops a person often).

-They travel toMadrid.
(Talk about a trip that is repeated daily, although the subject is not doing now).
Below are the ways affirmative, interrogative and negative of this tense:

the affirmative interrogative mode negatively
I Play Do I Play? I Don´t
You Play Do You Play? You Don´t
He Plays Does He Play? He Doesn’t
She Plays Does She Play? She Doesn’t
It Plays Does It Play? It Doesn’t
We play Do WePlay We Don´t
They play Do They Play? They Don´t

In the top box has been taken as an example the verb PLAY. Note that in the affirmative, in the 3rd person singular, you add an "S" to the verb.
EXAMPLE:
-He eats vegetables.
-Alice dances at the theater.
-The dog breaks the fence.

In interrogative and negative mode using the auxiliary DO, but in the 3 rd person singular auxiliary isplaced as DOES and removes the "S" to the verb.
There are some special cases such as if the verb used ends in "SS", "SH", "CH", "O" and "X" to form the 3 rd person singular in the affirmative is added "ES" .
Here are some examples:

- If the verb is FISH , will be combined: He fishes at the sea.
- If the verb is KISS, combine: She kisses to her boyfriend.
- If the verb is WATCH, arecombined: He watches the mountain.
- If the verb is FIX, will be combined: He fixes his car.
- If the verb is GO, come together: She goes to the office.

Another exception is if the verb ends in "Y" after consonant. To form the 3rd person singular is replaced this "Y" with an "i" along the end "ES".
Example:
-If the verb is STUDY, interact: She studies the lesson.

We know thatboth DO and DOES are used in English to make interrogative sentences in present simple, according to the formula DO / DOES + subject + verb.
The difference is that DOES auxiliary is used only if the subject is third person singular, while DO is used in the other cases. For example, consider the following sentences:

-Do you go to school every day?
- Does your sister speak French?
Theseauxiliary, followed by the negation NOT (or DO or DOES contracted form) also serve as an essential element of negative sentences in present simple. The structure here is DO NOT / DOES NOT + verb. The distribution of one or other auxiliary conditions follows the same grammatical person indicated above: DOES NOT or for the third person singular or DO NOT DO for all other grammatical persons.Examples are these sentences:

-I do not watch TV in the morning
-Does not read comics Helen

If these aids were used for interrogative sentences are also used in short answers to those questions. Thus, while in Spanish answer with yes or no to these questions, in English there is also the subject and auxiliary in the affirmative or negative.
Examples:
-Does he like tennis? Yes, he does-Does he like football? No, He Does not

Oraciones con sujetos 3ras personas singular
1) - Carlos buys ice cream every day. (Carlos compra helados todos los días)
-Does Carlos buy ice cream every day?
-Yes, he buys ice cream every day
-No, he doesn´t buy ice cream every day

2) - Vanessa sells plastic brushes. (Vanessa vende cepillos de plástico)
-Does Vanessa sell plastic brushes?Yes, she does
No, she doesn´t sell plastic brushes

3) - he plays ball every Sunday. (El juega pelota todos los domingos)
Does he play ball every day?
Yes, he does
No, he doesn’t

4) - she works as a taxi driver. (Ella trabaja de taxista)
Does she work as a taxi driver?
Yes, she works as a taxi driver
No, she does not work as a taxi driver

5) - he dreams of becoming a...