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.
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