Student’s Sentence: First, movies helps us relax after a long day of work or school.
Corrected Sentence: First, movies help us relax after a long day of work or school.
Grammar Explanation: “Movies” is plural, so use the base verb “help.”
Better Sentence: First, movies help us relax after a long day at work or school.

Student’s Sentence: It give us entertainment and make us feel happy.
Corrected Sentence: They give us entertainment and make us feel happy.
Grammar Explanation: “Movies” is plural, so use “they” and “give.”
Better Sentence: They provide entertainment and make us feel happy.

Student’s Sentence: Watching movies also allow us to spend time with friends and family.
Corrected Sentence: Watching movies also allows us to spend time with friends and family.
Grammar Explanation: “Watching movies” is a singular subject, so use “allows.”
Better Sentence: Watching movies also allows us to spend quality time with friends and family.

Student’s Sentence: For these reasons, movies is very popular all around the world.
Corrected Sentence: For these reasons, movies are very popular all around the world.
Grammar Explanation: “Movies” is plural, so use “are.”
Better Sentence: For these reasons, movies are very popular around the world.

Better Paragraph:
People watch movies for many different reasons. First, movies help us relax after a long day at work or school. They provide entertainment and make us feel happy. Also, movies can teach us important lessons about life and show different cultures. Some people watch movies because they want to escape from their problems and imagine a different world. Watching movies also allows us to spend quality time with friends and family. For these reasons, movies are very popular around the world.