电话聊天英文的表达可以从以下方面入手：1.打电话时的礼貌用语，如"Hello"、"May I speak to..."、"Is this the right number?"等；2.交流话题的开场白，如" How are you doing?"、"What have you been up to?"等；3.谈论具体话题时的表达，如" I heard that you went on vacation recently. How was it?"、"What do you think about the new movie that just came out?"等；4.结束通话时的礼貌用语，如"Nice talking to you"、"Take care"等。在电话聊天中，要注意表达清晰、声音洪亮，并且要尽量避免背景噪音等影响通话质量的因素。