The Present Perfect is often accompanied by the adverbs ever, never, just, already, of late, lately, yet. They are placed before the notional verb, of late, lately at the end, - yet, already both ways.
I have not yet answered this letter. = I have not answered this letter yet.
Я еще не ответил на это письмо.
He's just returned.
Он только что вернулся.
I've seen several interesting film of late.
В последнее время я посмотрел несколько интересных фильмов.
Note: In American English both the Present Perfect and the Past Indefinite are used with adverb just.
I've just seen him = I just saw him.
Я только что видел его.
The Present Perfect is also used for announcements of something that has happened.
The lecturer has fallen ill.
Ivanov has broken his leg.
Иванов сломал ногу.
President's daughter has kidnapped.
Дочь президента была похищена.
The Present Perfect can be used emphatically instead of the Present Indefinite in adverbial clauses of time when the speaker wants to emphasize that the action in the principal clause will only take place after the action in the subordinate clause.
You will go for a walk after you have done all your lessons.
Ты пойдешь гулять только после того, как сделаешь все уроки.
The Present Perfect Inclusive denotes an action, which began in the past, has been going on for a certain period of time and is still going on now. Normally, the Present Perfect Continuous is used here and the Present Perfect replaces it when the Present Perfect Continuous cannot be used (see Verbs that are not used in continuous tenses).
I have known him for about ten years.
Я знаю его около десяти лет.
I've been married for five years.
Я женат пять лет.
The Present Perfect is used in statements of the above type where the action refers to the past but the speaker means that it holds good for the present.
I've always preferred tragedy to comedy.
Я всегда предпочитал трагедию комедии.
The theory of numbers has always attracted all gifted mathematicians.
Теория чисел всегда привлекала талантливых математиков.
Note: After the Present Perfect of the verb to be all prepositions of place (in London) are replaced by the preposition of direction (to London).
Have you ever been to London?
Вы когда-нибудь были в Лондоне?