Hello! I am writing this letter to tell you about some troubles I have recently encountered. First of all, I want to say that I feel very lonely. Every day at school, I am always alone and have no friends to talk to. I tried to make friends on my own initiative, but no one seemed willing to talk to me. I don't know why, but I feel very confused.

In addition, my academic performance has been unsatisfactory. I tried to improve my grades, but no matter how hard I tried, there was no obvious progress. This makes me feel depressed and I don't know what to do.

Besides, I have pressure from my family. My parents expected me to get good grades, but I didn't meet their expectations. I know they are disappointed, but I also try my best to do my own thing. I hope to get their support and understanding.

Finally, I want to say that I feel very anxious and stressed. I don't know how to deal with these pressures and anxieties, which makes me feel very helpless and lost. I hope to get some advice and support to help me deal with these emotional problems. Thank you for taking the time to read my letter. I hope you can give me some advice and support to help me through this difficult period. Salute!

Arrange the structure according to people's understanding of the object

Explanatory objects that are unfamiliar to readers and difficult for readers to understand are often from concrete to abstract, from superficial phenomena to internal reasons. From the individual to the universal. In the concrete explanation, it is advisable to write the state first, then the function or reason, and finally reveal the nature and characteristics.

For example, the Dead Sea is a rational exposition, and the specific explanation part begins with a phenomenon: It is said that about two thousand years ago, the Roman commander Imperial City threw the captive slaves into the Dead Sea, but the slaves floated up unscathed and told an ancient fairy tale. Then explain the reason, this is because the salinity of the dead sea water is very high. Then the cause of the Dead Sea is further explained, indicating that it is the result of natural changes in the first place. This explanation is easy for readers to understand.