we are happy to be together to be together 是不是动词不定式.为什么是用be be 在这里怎么解释?

we are happy to be working是什么意思 We are happy to we are very happy to be back at Now,how happy we are to be the Now,how happy we are to be the We are hapPy (be) With We are very happy don't we? 英语：We are very happy to be with each other.这句话中的to We are only too happy to be of any service to you翻译下 We are very happy to be very sweet这句英语是什么意思? we are happy to see you we are meant to be we are happy to be together to be together 是不是动词不定式.为什么是用be be 在这里怎么解释? You are certain to be happy without me You are certain to be happy without me we are sure will be very happy very we are happy (be) here with you.至少加20 we are what we pretend to be ..... we are happy to receive such becautiful flowers (改为感叹句）be动词后能加动词不定式吗