动词不定式用来作状语
They ran over to welcome the delegates.
他们跑过去欢迎代表们。
To protect his comrades, he heroically laid down his lif.
为了保护同志们，他英勇地献出了自己的生命。
She decided to work harder in order (so as) to catch up with the others.
她决定加紧学习好赶上别人。
动词不定式用来作定语
I want to get something to read during the vacation.
我想找点书假期看。
Do you have anything more to say
你还有什么话要说吗?
She was the first person to think of the idea.
她是第一个想到这个主意的。
There is nothing (for us) to worry about.
没有什么值得发愁的。2015武汉职称英语考试报名网http://www.kaozc.com/En/hubei/wuhan/