begin（start） doing/to do
begin/start to do sth
begin/start doing sth.
1）談及一項(xiàng)長期活動或開始一種習(xí)慣時(shí)，使用doing.
How old were you when you first started playing the piano?
你幾歲時(shí)開始彈鋼琴？
2）begin, start用進(jìn)行時(shí)時(shí)，后面動詞用不定式to do
I was beginning to get angry.
我開始生起氣來。
3）在attempt, intend, begin, start 后接know, understand, realize這類動詞時(shí)，常用不定式to do.
I begin to understand the truth.
我開始明白真相。
4）物作主語時(shí)
It began to melt
begin/start to do sth
begin/start doing sth.
1）談及一項(xiàng)長期活動或開始一種習(xí)慣時(shí)，使用doing.
How old were you when you first started playing the piano?
你幾歲時(shí)開始彈鋼琴？
2）begin, start用進(jìn)行時(shí)時(shí)，后面動詞用不定式to do
I was beginning to get angry.
我開始生起氣來。
3）在attempt, intend, begin, start 后接know, understand, realize這類動詞時(shí)，常用不定式to do.
I begin to understand the truth.
我開始明白真相。
4）物作主語時(shí)
It began to melt