鬼火爆改76缸:begin to do sth./doing sth.的区别在于?

begin to do sth./doing sth.的区别在于? begin to do sth 和 begin doing sth 是什么意思？ begin to do sth和 begin dong sth的区别? begin to do/begin doing的区别 begin to do or begin doing ? mean to do sth/ mean doing sth 什么意思? it is my frist time to do sth / or doing sth/or do sth? be happy/surprised to do sth后面这个to do sth充当着什么语? consider sb to be/to do sth 中文是什么? agree to do sth agree to do sth有吗?