to
用在第二动词前表示动作的承接,就是很自然的发生了(to的其他用法就不赘述了)
而in
order
to
更强调目的
其实在这个意思上并没有绝对的区别
不定式 to do sth. 可以用作目的状语或结果状语以及形容词后的原因状语,相当于 in order to do sth.、so ... as to do sth. 和“be + 形容词 + to do sth. ”,而 in order to do sth. 只能表示目的,不能代表 to 的全部功能。例如:
The element is electrically insulated make it safe (=The element is electrically insulated in order to make it safe). 为安全起见,该元件作了电绝缘处理。
He worked very hard to have made such a great progress (He worked so hard as to have made such a great progress). 他学习非常努力,以至于取到了如此巨大的进步。
I am glad to meet you (=Iam glad, becauseI meet you). 很高兴见到你。