They are being polite.为什么用being?

They are being polite.为什么用being? It just makes me think they are being lazy.are being句中的意思 They are always being there这句话语法上有没错误? Moon cakes are r___ and they stand for being together. 为什么用They are being honest而不用They are honest求详解 An English RiddleAt night they come without being fetcheg,And by they are lost without being stolen.The answer is: Pumas never attack a human being except( )cornered?选项：A they are B being C that they areD when they are.为什么不能是A或C? they are not ask ,for they are afraid__________a.of laughing at b.to be laughed at c.of being laughed d.being laughed at What do English-speaking people often say when they are being photographed Let's stop being ____(kind) to animals because they are our best friends. 求翻译they are indispensable to people’s social weel-being If the people try not to see you , they are being polite.什么意思. They are being a____ with each other.a打头的单词... BRITS pride themselves on being pragmatic,but when it comes to banks they are anything but. pumas never attack a human being except ___cornered.1 they are 2 being 3 that they are 4 when they are请问选择哪一个,及分别说出每个为什么对与错 When they issue an invitation to somebody they are not just being polite and of that person accepts be described as being+ADJ 这个being如果拿掉有什么不同吗?Ther are often described as being reserved and cold.They are also seen as being very barve.Americans are often described as very loud,but they are also seen as being very friendly an the injured students in the traffic are in three hospital.Now they are being treating carefullynow可以用在现在完成时.为什么不可以用have being treated?