【过渡句开头】
用过渡句开头，表示此句与上下句的关系：
Consequently, I slowed down to avoid a fine ticket.
In fact, she was a kindhearted woman.
【同位语开头】
A signing officer of the bank, Jane signs her name hundreds of times each day at work.
A TV addict, Jim watches TV movies one after another every evening until after midnight.
【副词从句开头】
用副词从句开头，表示主句谓语动词发生的时间、地点、原因、方式、条件等
