例如：
Some changes have taken place in people’s diet in the past five years. Themajor reasons for these changes are not far to seek. Nowadays, more and morepeople are switching from grain to meat for protein, and from fruit andvegetable to milk for vitamins.
七、表示事实. 现状
1. We cannot ignore the fact that...
2. No one can deny the fact that...
3. There is no denying the fact that...
4. This is a phenomenon that many people are interested in.
5. However, that’s not the case.
例如：
We cannot ignore the fact that industrialization brings with it theproblems of pollution. To solve these problems, we can start by educating thepublic about the hazards of pollution. The government on its part should alsodesign stricter laws to promote a cleaner environment.