③at sea在航海 ④at work在工作

⑤at war在打仗 ⑥at peace和平相处

⑦at hand在手边 ⑧at will任意

6．(教材P34)Gene­therapy is very controversial and many people oppose further research into it.

基因疗法是很有争议的，许多人反对对此做进一步的研究。

oppose vt.反对，抵制，阻挠

(1)oppose doing sth.　　　　 反对做某事

oppose sb./sb.'s doing sth. 反对某人做某事

(2)opposed adj. 反对的

be opposed to (doing) sth. 反对......；不符合

(3)opposite adj. 对立的，在......对面的

　 prep. 在......的对面

　 n. 相反的人或物，对立物

①Many residents oppose/are opposed to building the motorway.It is not a wise decision.

许多居民反对修建那条高速公路，那可不是个明智的决定。

②Her wealthy parents opposed/were opposed to her marrying (marry) a boy from the poor family.

她那富有的父母反对她同贫寒家庭的孩子结婚。

③She turned and walked off in the opposite (oppose) direction.

她转身向反方向走去。

[名师点津]　oppose＝object to＝be against＝be opposed to 反对；oppose为及物动词，object为不及物动词，against为 介词。

④Do you oppose the plan or support it?

＝Do you object to the plan or support it?

＝Are you against the plan or for it?

你反对这一计划还是支持它？

7．(教材P34)The Olympic spirit - the spirit of competition which emphasises taking part rather than winning - has been violated by the desire to succeed at all costs.

奥林匹克精神--强调参与而不是取胜的竞技精神--已经被为获得成功而不惜任何代价的欲望所亵渎。

at all costs (＝ at any cost) 不管多大代价，无论如何

at the cost of　　　　　　　　 以......为代价

at a cost of 以......的价格

at cost 按成本价

①She would like to finish her project at all costs/at any cost.

她愿意不惜任何代价来完成自己的计划。

②She saved him from the fire, but at_the_cost_of her own life.

她为了从大火中救他而付出了生命。

③He bought a computer at_a_cost_of 5,000 yuan.

他买了一台电脑，花了5 000元。

④This is the lowest price.We are selling at cost already.