It is Korea's custom to bow when we see people. Also, we take our shoes off before we go inside our house. Lastly, when we eat something, dad eats first.

                 ==========CORRECTIONS============

1.
Christine: Koreas castun are they bowl when we see people.
Correct: It is Korea's custom to bow when we see people. 
Explanation:

* Study and learn the standard format of creating and constructing sentences. Always remember the rule of STVDO. It follows this format: Subject + Transitive Verb + Direct Object. Direct objects can be nouns, pronouns, phrases, or clauses. In your sentence, before the Direct Object which is Korea's Custom, you should add a subject and linking verb.

* With nouns or pronouns, Gerunds are used to indicate what something can be used for, or what is to be done with it. We use the gerund form by adding "to" before the verb.

2.
Christine: Also we take our shoes off before we go inside our house.
Correct: Also, we take our shoes off before we go inside our house.
Explanation:

* Learn the different rules in using commas in our sentences. Use a comma to set off introductory elements. Use a comma to avoid confusion.

3.
Christine: lastly when we eat something dad eats first.
Correct: Lastly, when we eat something, dad eats first.
Explanation:

* Always start our sentences with a capital letter. It is the most basic rule in writing composition in English.

                 ==========NOTES============

Hello Christine! Thank you so much for submitting this homework. I am really proud of you because you can now create longer and complex sentences. Keep it up and don't stop studying English! I know that you will do well as long as you don't give up! See you next week! Take care always~ :)

- T. Rose