begintodo和begindoing到底什么区别?老师还说一会儿人作主语,一会儿物作主语的不懂哦

Question

begin to do 和 begin doing 到底什么区别?老师还说一会儿人作主语,一会儿物作主语的 不懂哦

Answer 1

一般来说,二者可以互换.但以下情况用 to do：
1. 主语不是指人,而是it等.如：It began to rain.
2. begin后接表示心理活动的词.如：begin to know
believe, wonder, think等.
3. begin本身是ing形式,为避免重复后接to do 即,beginning to do
另,
如果谈论一个长期的习惯动作开始养成时,更加常用begin doing.例如：
How old were you when you first began playing the piano?