课文重难点详解 Further notes on the text

　　1.A pilot noticed a balloon which seemed to be making for a Royal Air Force Station nearby. 一个飞行员发现了一只气球，它像是正飞往附近的一个皇家空军基地。

　　(1)to be making for为不定式的进行式，表示正在进行的动作：

　　They seem to be talking about something important.

　　他们似乎正在谈论某件重要的事情。

　　She seems to be looking for somebody/something.

　　她似乎正在找人/什么东西。

　　(2)make for为固定短语，其含义之一为“(匆匆)走向”、“向……前进”：

　　While the thief was making for his car, a policeman stopped him.

　　当小偷匆勿走向他的汽车时，一位警察拦住了他。

　　After leaving Calais, the ship made for Dover.

　　离开加来后，那艘船便驶往多佛。

　　2.He said that someone might be spying on the station and the pilot was ordered to keep track of the strange object. 他说有可能有人正对基地进行侦察，因此命令那个飞行员跟踪那个奇怪的飞行物。

　　(1)might be doing sth.表示对正在进行的动作的推测(cf.第19课语法)：

　　(2)keep track of 为固定短语，表示“追踪”、“保持联系”、“记录”等(其反义词为 lose track of)：

　　Keep track of the man wearing a grey hat. He looks suspicious to me.

　　跟踪那个戴顶灰帽子的人。我觉得他看上去可疑。

　　She managed to keep track of her friends.

　　她设法保持了与朋友们的联系。

　　3.He could make out three men in a basket under it…他看清了气球下面有3个人呆在一只筐里……

　　make out是固定短语，它在这里的含义是“(勉强)看出”、“辨认出”、“听出”：

　　In the darkness of night, he could just make out three men coming toward them.

　　在黑夜中，他只能看出有3个人在向他们走来。

　　Can you make out what they are talking about?

　　你能听清他们在谈什么吗?

　　I can't make out the boss's handwriting.

　　我辨不出老板的字迹。

　　4.The police were called in…警察被召来了……

　　call in 在这里表示“召来”：

　　Sam has a temperature. We'd better call in a doctor.

　　萨姆发烧了。我们最好请医生来。

　　When he discovered that some important things were missing in his room, he called the police in.

　　当他发现屋子里少了一些重要东西之后，他便把警察召来了。

　　新概念英语第二册第91课单词详解 Word study

　　1.spy

　　(1)vi.暗中监视;侦察(通常与 on，upon连用)：

　　Someone is spying on the station.

　　有人正在对基地进行侦察。

　　I noticed some policemen spying on the foreign tourists.

　　我注意到一些警察在暗中监视那些外国游客。

　　(2)vt.发现，看见：

　　He spied a stranger in his garden.

　　他在花园里发现了一位陌生人。

　　She spied a cloud of smoke in the distance.

　　她发现远处有一团烟。

　　(3)n.间谍，密探：

　　He was once a spy for the police / British government.

　　他曾是警方/英国政府的密探。

　　They have arrested three spies.

　　他们逮捕了3名间谍。