1. It is considered /thought that ------- 人們(有人,大家)認(rèn)為
　　2. It is generally /usually accepted /agreed/recognized that ----普遍(一般,通常)認(rèn)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(jù)說(shuō)(有人說(shuō))
　　6. It is learned that ---據(jù)聞(悉)
　　7. It is supposed that----據(jù)推測(cè)
　　8. It is estimated/predicted/calculated that---據(jù)估計(jì)(預(yù)計(jì)
　　9. It must be pointed that ---必須指出
　　10. It is reported that----據(jù)報(bào)道
　　11. It must be admitted that----必須承認(rèn)
　　12. It will be seen that ---可見(jiàn)(可以看出)
　　13. It will be seen from this that ----由此可見(jiàn)
　　14. It is understood that----不用說(shuō)(都知道)
　　15. It can not be denied that---無(wú)可否認(rèn)
　　16. It has been proved/demonstrated that---已經(jīng)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(shuō)
　　19. It is sometimes asked that---人們有時(shí)會(huì)問(wèn)
　　20. It is expected that/hoped that----人們希望
　　21. When it comes to ------要說(shuō)到,要談及