2020年考研英语小作文的题目和范文如下：
题目一：感谢信
内容：
你过去常常花费太多时间在网络上聊天和玩电脑游戏，后来你的朋友Bob成功说服你减少上网时间，过上更健康的生活。你给他写一封信表达你的感激之情，并告诉他你的变化。
参考范文：
```
Dear Bob,
I’d like to deliver my great thanks to you first, my friend. You can’t believe how much I have changed after you talked to me seriously last time. I am no longer addicted to the internet and computer games thanks to your effort. After that talk with you, I...
```
题目二：通知
内容：
学生会分配给你一项任务，要求你通知国际学生们即将举行的歌唱比赛。
参考范文：
```
Notice
Dec. 21, 2019
In order to enrich the campus life and provide the colorful life for you, the Students’ Union is preparing the upcoming singing contest, which will be held in the auditorium in our university on the evening of December 31, 2019. Now, the Union is recruiting contestants for this competition. Anyone who are fond...
```
题目三：推荐信
内容：
假设你正在为一群国际学生规划一次历史遗迹之旅，给他们写一封邮件，介绍一个旅游景点，并给出一些旅游建议。
参考范文：
```
Dear All,
My name is Li Ming, and I am president of the Student Union. I am writing to recommend a...
```
以上是2020年考研英语小作文的部分题目和范文。这些题目覆盖了感谢信、通知和推荐信等常见题型，考生可以根据这些模板进行准备和练习。