This if episode will help you to mast the "have done" sentences in Mandarin, with detailed explanation and expamples.

learn Chinese with GaoYang

How to express present perfect tense in Mandarin? (experience in the past)

Росси́я – о́чень больша́я и интере́сная страна́. Здесь вы мо́жете найти́ мно́го но́вого и необы́чного. 
Russia is a big and interesting country. Here you can find a lot of new and unusual things.
Listen to a podcast about travelling in Russia and interesting places there. 


Russian Library

Travel to Russia

Everything you need to know about the articles (A, An, and The) in English.
How we use them. The General Rules. Special Rules. And Pronunciation.
https://youtu.be/kxftIzuFFtA?si=1OwtCtGEYTktzN95

English Syndicate

English Grammar Lesson: The articles in the English language 📖

https://drive.google.com/file/d/1Eqn11TjU_x7tRfAHuMx2CybRJnx8_1Ho/view?usp=sharing

Teacher Robert's Podcast

Learning English with Songs  - “Master of Puppets” by Metallica (with transcript and vocabulary)

      Xièxie
A：谢谢！
   Bú xiè
B：不谢！


HSK Standard Course Level 1 Audio of the textbook

Lesson 2 text 1

Dos chicas hablan, usando el preterito indefinido y los verbos irregulares, del robo de su telefono celular 