It is unusual for him to be late.这句话里为什么要加be呢?

It is not unusual for people to be subject to criticism people后面为什么加to It is not unusual for people to be subject to criticism He said that it is unusual for you,_ (反意疑问句)改反意疑问句 In china,it is unusual for u____sons and daughters to live separately from their parents It is unusual for him to be late.这句话里为什么要加be呢? You must know it is unusual是什么意思? 英语翻译274.It is not unusual for you to work for an organization that has a multicultural workforce. how unusual the book is 同义句 _ _ unusual _ it is! It is not unusual for a family earning less than two hundred dollars a year to spend a quarter ofits income on malaria treatment这句话怎么翻译?被It is not unusual 搞糊涂了 it is rare for him to be late.the sentence means( )A he is often lateB it is unusual that he is lateC it is common for him to be lateD he is never late为什么选B? It is the most unusual film I have ever seen. --- .Is this bus for Yancheng ---No,it isn’t .It’s for Xuzhou.A.Hi B.Excuse me C.Sorry It is not unusual for a day trader to have positions that would require overnight margin of 20000to 30000 or more---trading a 10000 account.大概意思? 翻译I thought this was unusual because it is rare for grandparents to live with their children and grandchildren in the USA It is _____ unusual thing for us to find _____ UFO.解释为什么UFO,前面要用a,难道不应该用an吗?答案我知道, ( )7.Hi,Tim!Here is a letter you.It’s Beijing.A.for; from B.to; from C.for; of This pet is unusual.It is easy to take care of and it takes. W:Hi,Millie!How is it ___