English Language Lesson on 5 Most Common Grammatical Mistakes (HOW TO AVOID THEM !!)

The video tutorial addresses five common grammatical mistakes in English. It begins with an introduction to these errors, followed by detailed explanations of each mistake. The first mistake involves the omission of 's' in third person singular present simple sentences. The second mistake covers the confusion between different types of conditionals. The third mistake focuses on the correct use of possessives and apostrophes. The fourth mistake differentiates between 'could' and 'should'. Finally, the video explains the proper use of 'who' and 'which' in sentences.

Provide an example of a sentence using the third person singular correctly.

What should you remember when forming negative sentences in the third person?

What is the correct usage of 'who' and 'which' in sentences?