我认为这道题, “communities”不是交流的意思,是community 的复数,也就是说,这道题的意思是,internet从那些方面改变了这个社会?三个论点:1.Internet becomes a part of our life.2. people depend on internet, in this sociey, tons of things can not leave internet.3. people can search any kinds of information in the home because internet is fast, mass of information.