The simple present tense

The simple present tense indicates that on activity or situation began and ended at a particular time in the past.
Example:
- I walk to school everyday.
- He brings a new car three times in a week.
Sentence pattern of simple present tense:
Affirmative (+): S + V1 (-s/ -es) + c (complement).
Example:
- He sweeps the yard in the morning.
- I play piano everyday.
Negative (-): S + do/does not + infinitive +c.
Example:
- I do not walk to school.
- He does not bring a new car.
Interrogative (?): Did + S + infinitive + c?
Example:
- Do you walk to school?
- Does he bring a new car?
The use of this tense is limited to indicate that an activity, state or occurrence in daily without indicate any connection with the “everyday” is one of the safe time signals for this tense.
In the simple present tense we must use verb-I and added –s or –es for all singular subjects.
The verbs in the simple present tense there are of two forms:
1) Transition Verbs:
a. The simple present tense using transition verb is formed by adding “-s/-es” to the infinitive:
Work _ Works
Cook _ Cooks
b. Verbs ending in “e” add “s” Only
Love-Loves
c. Verbs ending in “y” following consonant change the “y” into “i” before adding “es”:
Study - Studies
Fly - Flies
2). Bare Infinitive Verbs
These very considerably in their simple present form:
To speak - Speak
To eat - Eat
To See - See
To leave - Leave
To come - Come
To fight - Fight
To find - Find
To hold - Hold
To make - Made, etc

The simple present form of the usage of these verbs must therefore be learnt, but once this is done there is no other difficulty, as time sequence.