重點講解:
1. ought to do sth. 應當,應該;
例句:You ought to be ashamed of yourselves. You've created this problem.
你們應該感到慚愧,都是你們惹的禍。
2. keep up 跟上;(與…)齊步前進;不落后(于…);
例句:He drove off too fast for me to keep up.
他的車開得太快了;我趕不上。
3. on one's own 獨立地;依靠自己地;
例句:All employees who move into supervisory positions must figure it out on their own.
所有打算競爭管理崗位的員工必須完全依靠自己完成。
4. hurry up 趕緊;趕快;
例句:Hurry up, or else we will be late for check-in.
快點,否則我們來不及報到了。
adj. 警覺的,靈敏的
n. 警戒,警報