8.11 begin(start)doing/to do
begin/start to do sth.
begin/start doing sth.
1)谈及一项长期活动或开始一种习惯时,使用doing.
How old were you when you first started playing the piano?你几岁时开始弹钢琴?
2)begin,start用进行时时,后面动词用不定式to do
I was beginning to get angry。我开始生起气来。
3)在attempt,intend,begin,start 后接know,understand,realize这类动词时,常用不定式to do。
I begin to understand the truth。我开始明白真相。
4)物作主语时
It began to melt.