1. It is considered /thought that ------- 人們(有人,大家)認為
2. It is generally /usually accepted /agreed/recognized that ----普遍(一般,通常)認為
3. It is believed that -----有人(人們,大家)相信
4. It is well-known that ----大家知道(眾所周知)
5. It is said that ----據說(有人說)
6. It is learned that ---據聞(悉)
7. It is supposed that----據推測
8. It is estimated/predicted/calculated that---據估計(預計
9. It must be pointed that ---必須指出
10. It is reported that----據報道
11. It must be admitted that----必須承認
12. It will be seen that ---可見(可以看出)
13. It will be seen from this that ----由此可見
14. It is understood that----不用說(都知道)
15. It can not be denied that---無可否認
16. It has been proved/demonstrated that---已經證明
17. It may be confirmed that ----可以肯定
18. It may be safely said that----可以有把握地說
19. It is sometimes asked that---人們有時會問
20. It is expected that/hoped that----人們希望
21. When it comes to ------要說到,要談及
