====CORRECTIONS====

Sang Hyup: Steve jobs was born in 1955 and died in 2011.
Correct: Steve Jobs was born in 1955 and died in 2011.
Explanation: "Jobs" is a proper noun so it should be capitalized. This one may seem obvious, but there's also a catch. Of course, you capitalize the first letters of a person's first, middle and last names (John Quincy Adams), but you also capitalize suffixes (Jr., the Great, Princess of Power, etc.) and titles.

Sang Hyup: This is because he invented a groundbreaking gadget i-phone.
Correct: This is because he invented a groundbreaking gadget called the Iphone.
Explanation: Use the word "called" by which it is pertaining to the subject that is being described or talked about in the sentence. Emphasize it with the article "the" to be more specific.

Sang Hyup: By using the gad people can easily get their destination.
Correct: By using that gadget, people can easily get to their destination.
Explanation: When you use that as a pointer, make sure there's a person, place, or thing right after it.

For example, suppose you wrote this: "The entry fee has doubled, and that means I won't be going this year." A good editor would strike out that sentence because that refers to "the doubling of the entry fee," and you didn't use those exact words. Here's what you should have written: "I won't be going because the entry fee has doubled."

It's usually easy to fix these sentences: Just rewrite them without using that. And sometimes it's even easier: Just put a noun after that.

The preposition to is another common preposition of place. It is normally used with a verb showing movement and shows the result of the movement-- the place or person that the movement was toward
or in the direction of. The prepositiontoward has a similar meaning, but it's not exactly the same: with toward, the direction of the movement is
shown, but not the result.

Sang Hyup: Sometimes he went through hard time.
Correct: Sometimes he went through hard times.
Explanation: Pluralized the word "hardtimes" for it shows that these happend or happens for several times and not only once.

Sang Hyup: Therefore, He founded a company named Pixar, a company that makes animation film.
Correct: Therefore, he founded a company named Pixar, a company that makes animation films.
Explanation: Just use the small letter for the pronoun he, since it is not the first word in the sentence. Then make the word film into films for an animation corporation makes a lot of films or movies.

Sang Hyup: Toy story, an animation file, was one of the most successful series of his work.
Correct: Toy story, an animation film, was one of the most successful series of his work.
Explanation: Be careful with spelling! :)