那老太太每天去买报纸，不多时便觉乐在其中，因为她主要是想和店主聊天。 For the old lady buying the daily newspaper soon became an end in itself, since she really just wanted to chat with the shopkeeper.
我没心情和你聊天。 I am in no mood for chatting with you.
和朋友聊天是愉快的，而这种情形没有比和知己的朋友聊天更为愉快。 It is pleasant to chat with friends, and with no chat is it more pleasant than with close friends.
他们在花园里聊天度过了下午。 They talked their afternoon away in the garden.
我们坐在他起居室的椅子上聊天。 We sat on the chairs chatting in his living room.
他们坐在凉亭里，边喝茶边聊天。 They sat in the arbor and chatted over tea.