began to后加什么词

begin后不能直接用do，要用动词不定式，to do。
例句：
He began to tie his shoelaces、
他开始系鞋带。
The party began to splinter、
那个党开始分裂。

She began to eat ravenously。

她开始狼吞虎咽地吃起来。

Nancy began to climb the stairs。

南希开始爬楼梯。

She began to walk away from him。

她开始离他而去。