communicate,是动词，可以作谓语，可以变成非谓语动词，如,Communicating,to communicate,communicated,用来作定语，状语，宾语补足语communication是名词，可能来作主语，宾语，定语。例如:We often communicate with him by telephone.(谓语)，The child kept communicating with his father.(宾语)The communication between you and your friend is important(名词，主语)