我们在大减价时，以(从500英镑减至350英镑)很便宜的价格买了台电

视。

2)decrease指数量上的减少；力量或者强度的减弱become less in sizs, number, strength or quality 反 increase

Our sales are decreasing.

The company decreased the number of workers.

The population decreased a lot last year.去年人口数量急剧下降。

3)decline a)衰落；跌落；降低（ from better to a worse position; or from higher to lower（如：经济形势、股息的）下降，萧条（指倾向，趋势）

　 The old man declined rapidly and soon died.

b)辨析：decline客气的拒绝（尤其对提议或邀请）

We asked them to come to our party but they declined( the invitation).

　refuse 没那么客气，较为坚决

　 The prisoner refused to give his name.

　turn down 与refuse 相似

　reject 根本不考虑提议或建议；不接受（某人）

　 The workers have rejected the company's pay offer.

　 He felt rejected by society.

4. treatment n,

treat sb. with sth.治疗（过程）

cure sb. of sth 治愈

heal sb. of sth 治愈（外伤）

5．likely adj.可能的

辨析：possible/ probable/ likely

1) possible只有可能性小

　　probable多指有较大的可能性

　　likely=probable

It is possible that (should) do

It is possible (for us) to study English well.

It is possible that we study English well.

b. It is probable that...

　　It is probable that it will rain today.

　　不能说: It is possible for him to come.

It's possible that it will rain, but with such a blue sky it doesn't seem probable.有可能下雨，但眼下晴空万里不像是下雨的样子。

c. sb./ sth. be likely to do

It is likely that

He is likely to come.

　　It is likely that he will come.

　　It is likely that it will rain.

　　　　　　　　　　　　　　　　　　　　　　　　资*源%库It is likely to rain.

a) perhaps & maybe都当"也许"，"可能"解。但maybe一般用于非正式