1. 祈使句+and +陈述句(常用将来时)
Talk to a man about himself （跟一个人聊他自己的事）, and （那么）he will speak to you for hours！
I have a favour to ask（要问）.
3. every time 引导时间状语从句
Every time (每次)I open my mouth, I put my foot in it.
4. It is +过去分词+that
It is estimated that （据估计）80% of all conversation in English is small talk.