歉,打错了,应该是This is my family which is big and full of happiness.
如果用楼上的句式,可改为This is my family,a big family and a happy family.
and不能省,happy去后缀
This is my family which is big family and full of happiness.
楼上有语病,happyness这个词拼错了,应为happiness,这是名词
This is my family,a big family,a happyness family.