Simple Past vs Present Perfect Tense - Basic English Grammar

In this video, Alisha answers 8 questions. - I would like to know how to use “I will/would go with that“ ,when I order menu in restaurants. - Hi, Alisha! Can I also use I've not + p. p. for PPT? - What's the difference between "planning to do something" and "planning on doing something?" For example, "Are you planning on helping John?" - Can you tell me the difference between: 1- "make sure" and "ensure" and "assure" 2- "certain" and "ascertain" - What is the differences between meaning two sentences ? 1- what did they do to you? 2- what have they done to you? - Could you help me? Which one is correct: 'Different than' or 'Different from'? - What does "Nailed It" mean? - In one of your videos you said that you have learned japanese. I am learning japanese too any tip to learn new language fast?