Hello Asato,

Your journal entry is very good. I added some corrections below.

Today I had an English lesson with my online teacher. We talked about my favorite things.
My favorite city is Sendai. It is in the northern part of Japan. It is known for beef tongue, a very delicious food from Sendai. I love the city because it reminds me of memories with my girlfriend and my friends in my university. It is a nostalgic city for me.

My favorite pastime is swimming in the city pool during my free time. I love it because I can enjoy the feeling of the water, and it is very relaxing to me. And when I go to a pool to swim, I ride my bicycle. It is very comfortable for me to feel the breeze while riding it.

Tips to focus on:

- Remember to use the articles "a", "an" and "the" (I know these are not used in Japanese)
- Difference between "during" and "while": "During" is followed by a noun ("I always listen during the class"), and "while" is followed by a clause ("I always listen while I sit in class").

Hope this helps!