1．be used to do sth被用来做某事情
2．used to do 过去常常做某事情
3．be/get used to doing sth 习惯于做某事情
4．达到目标 achieve the goal
5．across 穿过,和on 有关,指从上面,上方穿过, through 穿过和in有关,从里面,内部穿过
6．walk across the street/bridge , walk through the forests
7．担当,充当 act as , 执行 act on
8．采取行动 take action /take measures to do sth
9．在某方面积极 be active in… 积极参加 take an active part in=join in
10．adapt… to…适应, adopt sth/sb 领养某人,采纳某事情
