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Keys: 1). Smoking is forbidden on the plane.

2). His father forbade him to talk to her.

3). It is hard to forbid children (to play) computer games.

4. accumulate vt.&vi. 积累；聚积 accumulation n [u,c] 积累

[典例]

1). By investing wisely she accumulated a fortune. 她由於投资精明而积蓄了一笔财产。

2). Dust and dirt soon accumulate if a house is not cleaned regularly. 房屋不经常打扫, 尘土很快就越积越多。

[练习] 根据句子的意思在括号里填入所给词的适当形式。

1). A thick layer of dust _______ (accumulate) in the room, so he had to give it a thorough cleaning.

2). Despite this _______ (accumulate) of evidence, the Government persisted in doing nothing.

Keys: 1). had accumulated 2). accumulation

5. owe vt. 欠；应该把......归功于；感激，感恩

[典例]

1). He owes his father £50. = He owes £50 to his father. 他欠他父亲50英镑。

2). We owe this discovery to Newton. 我们的这一发现归功於牛顿。

[重点用法]

owe sb sth = owe sth to sb 欠(某人)债 owe sth to sb/sth将某事物归因或归功於某人/事

[练习] 根据句子的要求在括号里填入适当的介词。

1). How much do I owe you _______ the groceries?

2). He owes his success more _______ luck than _______ ability.

3). I owe a lot _______ my wife and children.

Keys: 1). for 2). to; to 3). to

6. retire vi.退休(役)；退出，撤退；就寝

[典例]

1). He will retire from the army next year. 他明年从部队退役。

2). Our forces retired to prepared positions. 我们的部队撤退到既设阵地上。

[重点用法]

retire from... 从......退休(役)/退出 retire (from...) (to...) 退下，退出，离开（尤指到僻静处）

[练习] 根据句子的要求在括号里填入所给词适当的形式或翻译。

1). He _______ (retire) next year after 30 years with the company.

2). She was forced to _______ _______ _______ (提前退出)teaching because of ill health.

3). He is a _______ (retire) airline pilot.

Keys: 1). is retiring 2). retire early from 3). retired

7. bother vt. 打扰 vi. 操心 n. 烦扰