We may think that we do every day is normal, but when we have something to meet people in a different culture, what we do may be something for him or what he is doing is for us, which may cause a culture shock.
We may think that what we do every day is normal, but when we got to meet people from different cultures, what we do may become a strange thing for him or what he was doing something strange for us. This could cause a culture shock.
We may think that we do every day is normal, but when we went to see people of different cultures, what we do may become something strange for him or what they do strange things for us, which may cause. Culture shock.