本集核心英语单词及例句：

1.chin (n.)颏，下巴
I never saw such a long chin in my life.
我生平没有见到过他那样长的下巴。

2.defeat (vt.)击败，战胜
We can defeat Class Two in the friendly match.
在友谊比赛中，我们能战胜二班。

3.surrender (vi.)投降；屈服
Paris was besieged for four months and forced to surrender.
巴黎被围困了四个月后被迫投降。

4.arrogant (adj.)傲慢的，自大的
The boss's son was arrogant to all the employees.
老板的儿子对所有的雇员都傲慢无理。

5.motivate (vt.)诱导；激励
How do you motivate people to work hard and efficiently?
你是怎样激励大家奋发高效地工作的？

6.appreciative (adj.)感激的；表示赞赏的
The company was very appreciative of my efforts.
公司对我的努力十分赞赏。