英语大作文中可用于第一段的词汇或短语有哪些？

1. Introduction
2. Background
3. Context
4. Overview
5. In recent years/decades
6. Nowadays
7. Currently
8. In the present day
9. It is well known that
10. It is commonly believed that
11. It is widely acknowledged that
12. According to statistics/research
13. The issue/problem/topic under discussion
14. The purpose of this essay is to
15. This essay will explore/discuss/analyze
16. The aim of this essay is to
17. The main focus of this essay is to
18. In this essay, I will argue that
19. This essay will examine the reasons why/ the impact of
20. This essay aims to provide a comprehensive analysis of