Sometimes you can learn more about what a person is trying to say just by watching instead of l . You might be talking to someone about an idea you have. He might say that he's interested your idea. Just watch his face. Is he l at you or are his eyes moving around, just tired of w you're saying ? It's important to watch other's body language carefully because it provides a lot of useful (信息). Sometimes a person will be speaking too q or use words that you don't understand. If you pay attention to the (信号)he is giving, maybe you can still follow him, even you're not sure of the meaning of the words. This is especially (有必要的)when watching TV or in other situations you can't ask the speaker to slow down.