8.11 begin（start） doing/to do-特别词精讲
8.11 begin（start） doing/to do
begin / start to do sth /begin / start doing sth.
1）谈及一项耐久活动或开始一种习尚时，利用doing。例如：
How old were you when you first started playing the piano?你几岁时开始弹钢琴？
2） begin, start用举行时时，背面动词用不定式to do。例如：
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。例如：
I begin to understand the truth。我开始年夜白IT。
4）事物作主语时。例如：
The snow began to melt.雪开始消融了

关键字：start doing begin doing begin和start的区别 begin start start begin的用法