1. What color eyes does he have?

He has dark brown eyes.

2. What color hair does the dog have?
She has brown hair.

3. Hair is used not only for people's hair but also for animals' fur.

4. The order of writing the date in English is different from that in Korean.

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Are the expressions above correct?
If there are any errors, let me know them, please.

All look good although "fur" is usually used when referring to animals; "hair" is for humans.

All punctuation is correct.

Thank you for your answer.

What about the follwoing questions and answers? Are they also correct?

1. What is the color of Mike's eyes?
It is blue.

2. What is the color of the dog's fur?
It is brown.

1. What is the color of Mike's eyes?

They are blue.

2. OK as is.

1. The question, "What color eyes does he have?" is asking for information about the eye color of a specific person or subject. The answer, "He has dark brown eyes," directly provides the information requested, so it is correct.

2. The question, "What color hair does the dog have?" is asking for information about the hair color of a specific dog. The answer, "She has brown hair," directly provides the information requested. However, it's worth noting that while humans generally refer to hair on their heads, the correct term for hair on animals is "fur." So, a more accurate statement would be, "She has brown fur."

3. The statement, "Hair is used not only for people's hair but also for animals' fur," is correct. Here, the speaker is explaining that the term "hair" can be used to describe both the hair on people's heads and the fur on animals.

4. The statement, "The order of writing the date in English is different from that in Korean," is also correct. English typically uses the format month/day/year, while Korean generally uses the format year/month/day. This statement highlights the difference in date formatting between the two languages.