他是这起空难的目击者，该空难导致43名乘客死亡。

　　④I bore witness to his innocence.

　　我证明他是无辜的。

　　[语境串记]

　　The witness who witnessed the accident gave witness to the police and promised to be a witness.

　　这个目击了这场事故的目击者向警察提交了证据并且答应做证人。

　　2．opposite

　　[教材原句]　We ran down to the shore in time to see an enormous animal opposite us throwing itself out of the water and then crashing down again.

　　我们及时赶到岸边，看到对面有一个庞大的动物猛力跃出水面，然后又坠落到水里。

　　(1)prep.在......对面

　　①It's easy to find - there's a church just opposite my house.

　　我家很容易找，就在教堂对面。

　　(2)adj.相对的；相反的

　　②She tried calming him down but it seemed to be having the opposite effect.

　　她试着让他平静下来，却似乎火上浇油了。

　　(3)adv.在对面

　　③The woman sitting_opposite is a detective.

　　坐在对面的那个女子是侦探。

　　(4)n.对立的人(或物)；对立面

　　④He is honest and hardworking, but his twin brother is the complete opposite.

　　他诚实、勤奋，但他的孪生兄弟完全相反。

　　⑤As we all know, hot and cold are opposites.

　　我们都知道，热和冷互为反义词。

　　oppose vt.　　　　反对；抵制

　　opposition n. 反对；反抗

　　opposed adj. 反对的；对抗的

　　[语境串记]

　　Although my opinion is opposite to yours, I oppose the tax on vehicles and vessels. I find I am in opposition to you on many questions.

　　尽管我的观点与你的相反，我反对征收车船税。我发现我在许多问题上与你立场相反。

　3．urge vt.催促；极力主张；驱策

urgency n．紧急；迫切；急迫

urgent adj.紧急的；急迫的；执拗的

　　 [教材原句]　"Man overboard！Turn the boat around！" urged George, shouting loudly.

乔治催促着，大声喊道："有人落水了！把船头调回去！"