How are you? I watched a horse riding competition yesterday evening.I watched this competition with my friend.I like horse riding because it’s very exciting.
I watched a horse riding competition.I watched this competition with my friend.It made me happy.
另外，在①中，作者第一句话便写出了问候语How are you，相对于②开头直入主题来说，①的开头更加适用于书信类作文，也减少了阅读时的生硬感和距离感。
Thank you for your letter.
Nice to hear from you.
How is it going?
How are you? I am excited to stay with you for a week, also! I’m sure we will have a lot of fun together.
On the first night, I would rather stay at home and relax because I will be tired after such a long trip to your house.
Thank you for the offering to go climbing, but I would not like to go climbing in the mountains because it seems dangerous. I want us to be safe!
I do have one question. Would it be possible to go to the beach one day while I’m there?
I am looking forward to seeing you.