Read these sentences and choose the correct variant.
1.
He doesn't has to work in the evening
He doesn't have to work in the evening
2.
He shouldn't stay up so late
He doesn’t shouldn't stay up so late
3.
I have a special talent, I can read very quickly
I have a special talent, I can reading very quickly
The verb "have" is used in the present simple tense to indicate possession or obligation. In the negative form, we add "do/does not" before the main verb. In this case, "have" is the main verb. "Has" is incorrect because it is used with the third person singular pronouns (he/she/it).
2. The correct variant is: "He shouldn't stay up so late." Why?
The modal verb "should" is used to give advice or make recommendations. Again, in the negative form, we add "do/does not" before the main verb. "Doesn't shouldn't" is incorrect because "doesn't" already negates the verb, and we don't need to use two negatives here.
3. The correct variant is: "I have a special talent, I can read very quickly." Why?
The verb "can" is used to express ability or possibility. The "ing" form of the verb "read" is not necessary because "can" already implies the ability to do something in general. We don't need to specify the ongoing action.
In summary, when choosing the correct variant, it is important to pay attention to subject-verb agreement, the use of modal verbs, and the correct verb tense. It is also important to understand the meaning and usage of the words in the sentence.