Part I：单词与短语

　　Detective n.&adj.侦探，侦探的；airport n.机场；airfield n.飞机停泊及起飞的地方；expect vt.期待，期望，盼望；valuable adj.值钱的；precious adj.宝贵的，珍贵的；parcel n.包裹；diamond n.钻石；South Africa南非；a few hours earlier几个小时前；the police警方；thief n.窃贼；steal vt.偷窃；wait inside(动词短语)在。。。里面等待；main building主楼；take sth. off (动词短语)把。。。从。。。上面拿下来；the Customs 海关；keep guard ](动词短语)警戒，守卫；at the door在门口；to one’s surprise令某人惊讶的是；full of装满了；stone n.石头；sand n.沙子

　　Part II：语法学习

　　1.过去进行时与when和while引导的过去进行时

　　示例1：The plane was late. Detectives were waiting at the airport all morning. They were expecting a valuable parcel of diamonds from South Africa.

　　示例2：When the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield.

　　示例3：While two detectives were keeping guard at the door, two others opened the parcel.

　　2.some与others

　　概念解释：当讲到很多人中的一些人时，往往用some替代；再谈到其他人时，往往用others替代

　　示例1：When the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield.

　　示例2：While two detectives were keeping guard at the door, two others opened the parcel.

　　3.过去完成时

　　概念解释：永远记住：过去完成时涉及到的是过去范畴的时间，与现在和将来无关；再请记住：当要描述的一个动作先于另外一个动作或者于某个具体的过去时间之前发生时，就要用过去完成时。

　　示例：A few hours earlier, someone had told the police that thieves would try to steal the diamonds.(这里的had told是过去完成时，因为它是在a few hours之前发生的)

　　4.过去将来时

　　概念解释：过去将来时，顾名思义，从过去某个时间来看是将来要发生的事情。

　　示例：A few hours earlier, someone had told the police that thieves would try to steal the diamonds.(这里的would try to steal就是过去将来时，因为从someone告诉警方这个时间来看，偷窃steal是以后要发生的事情，当时还没有发生)

　　Part III：综合训练

　　The plane was late (1) detectives were waiting (2) the airport all morning. They were expecting a valuable parcel (3) diamonds (4) South Africa, (5) a few hours earlier, someone (6) told the police (7) thieves (8) try to steal the diamonds. (9) the plane (10 arrive), some of the detectives were waiting inside the main building (11) others were waiting (12) the airfield. Two men (13 take) the parcel (14) the plane (15) (16 carry) it (17) the Customs House. (18) two detectives were keeping guard (19) the door, two (20) opened the parcel (21) (22) their surprise, the precious parcel was full (23) stone and sand!

　　答案：

　　(1) and; (2) at; (3) of; (4) from; (5) for; (6) had; (7) that; (8) would; (9) When; (10) arrived; (11) while; (12) on; (13) took; (14) off; (15) and; (16) carried; (17) into; (18) While; (19) at; (20) others; (21) and; (22) to; (23) of

　　Part IV：句型转换

　　将下面句子进行最大程度的合并：

　　1. The plane was late. Detectives were waiting at the airport all morning.

　　2. They were expecting a valuable parcel of diamonds from South Africa. A few hours earlier, someone had told the police that thieves would try to steal the diamonds.

　　3. The plane arrived. Some of the detectives were waiting inside the main building. Others were waiting on the airfield.

　　4. Two men took the parcel off the plane. They carried it into the Customs House.

　　5. Two detectives were keeping guard at the door. Two others opened the parcel. To their surprise, the precious parcel was full of stone and sand!

　　答案：

　　1. The plane was late and detectives were waiting at the airport all morning.

　　2. They were expecting a valuable parcel of diamonds from South Africa, for, a few hours earlier, someone had told the police that thieves would try to steal the diamonds.

　　3. When the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield.

　　4. Two men took the parcel off the plane and carried it into the Customs House.

　　5. While two detectives were keeping guard at the door, two others opened the parcel and to their surprise, the precious parcel was full of stone and sand!