Present Tense

"every day we learn our lesson at school"
this picture is a classroom of a school

but not our school maybe the other school
have a clasroom like this hehe :)

so let's talk about the underlined sentence
the uderlined sentence is using the pattern of present tense

so what is present tense or what is the formula of present tense? 

just click the read more and you will get the answer

A present tense  is a grammatical tense that locates a situation or event in present time. In English, the present may be used to express action in the present, a current state of being, an occurrence in the future, or an action that started in the past and continues.

There are two common types of present tense in most Indo-European languages: the present indicative (i.e., the combination of present tense and indicative mood) and the present subjunctive (i.e., the combination of present tense and subjunctive mood).

English

The English present tense can be combined with aspects in the following verbal constructions:

• present simple or simple present, which is used in several ways:

• to describe both habits and or routines (habitual aspect) (I eat breakfast every morning at 6:30. I go to work every day.), and general facts or the truth (The earth revolves around the sun.);

• to present thoughts, feelings, and other unchanging states (stative aspect) (I think so. I like it. It is hot. The sun always shines in the desert.);

• to indicate scheduled events in the near future (so that the simple “present” verb form actually indicates future tense) (I take the train tomorrow at 6:00.);

• to indicate events at any time in the future in a dependent clause (I’ll retire when I reach age 65.);

• to provide narratives such as instructional narratives (Now I mix the ingredients; now I put the pan in the oven.).

In the present simple, English uses the verb without an ending (I get the lunch ready at one o’clock, usually.) except that in the third person singular, (after he, she, it, your friend, etc.) the suffix -s or -es is appended to the verb (It gets busy on the weekends. Sarah catches the early train.).

The present simple tense is often used with adverbs of repeated time, as in these examples with the adverbs shown in italics:

• I never come to school by cycle.
• He always forgets to do his homework.
• I never catch the late bus home.

• emphatic present: The present tense can be expressed with emphasis by using the auxiliary verb do and the uninflected main verb, (I do walk., He does walk.).

• present progressive or present continuous, which is used to describe events happening now, e.g., I am reading this wiki article, and I am thinking about editing it. This tense is formed by combining the present form of the verb “to be” with a present participle;

• present perfect, which in English is a present tense with retrospective aspect (I have visited Paris several times. describes a present state of being based on past action; I have listened to you for five minutes now.);

• present perfect progressive, which is used to describe events or actions that have begun at some point in the past and continue through the present, e.g., I have been reading this article for some time now.

The Formula/Pattern of present tense:
1.Nominal part
   a.Positive sentence

• Subject(he,she,it) + to be(is) + object or adverb
• Subject(i,you,we,they) + to be (am,is,are) + object or adverb

   b.Negative sentence

• Subject(he,she,it) + to be(is) + not + object or adverb
• Subject(i,you,we,they) + to be (am,is,are) +  not + object or adverb

   c.Interrogative sentence

•  To be(is) +  subject(he,she,it)  + object or adverb + ?
•  To be (am,is,are) + subject(i,you,we,they)  + object or adverb + ?

2. Verbal part

    a.Positive sentence

• Subject(he,she,it)  + verb1 + s/es + object or adverb
• Subject(i,you,we,they)  + verb1 + object or adverb

    b.Negative sentence

• Subject(he,she,it)  + does + not + verb1 + object or adverb
• Subject(i,you,we,they)  + do + not + verb1 + object or adverb

    c.Interrogative sentence

• Does + subject(he,she,it) + verb1 + object or adverb + ?
• Do + subject(i,you,we,they)  + verb1 + object or adverb + ?