1、used to do sth: （过去）常常/ 习惯做某事
e.g. I used to sleep late in the morning.
There used to be a temple on top of the hill.
注：used to do 的否定式和反意式，可用usedn’t to do或didn’t u se to do
e.g. She used to be shy, didn’t she?
Did you use to go to the movies?
区别：be used to (doing) sth.: 习惯于做某事
e.g. I’m used to living here. Are you used to the weather in Beijing?
区别：be used to do sth: 被用来做……
e.g. A pen can be used to write articles.
2、graduate from… : 从……毕业
graduation from…
3、can / be able to
can: （主观的能力）能够、有能力
