Пять легких предложений в Present Perfect.

Tom has already read this interesting book. Том теснее прочитал эту занимательную книжку.

Mary has written a letter to her sister. Мэри написала письмо сестре.

My friends have played tennis. Мои друзья игрались в теннис.

Our teacher has asked some questions. Наш учитель задал несколько вопросов.

They have seen their friends. Они лицезрели собственных друзей.

 Present perfect is used for past actions which results are connected with present. Present Perfect is formed with the help of the auxiliary verb to have and with the help of the third form of verbs.

Interrogative is formed Have / has + subject + the third form of the verb.

Negative is formed have / has + the third form of the verb.