1. They are now at breakfast, talking about the plan for their trip. 他们正在吃早餐，并谈论着旅行计划。
句中talking about the plan for their trip是动词的-ing短语，作状语，表示伴随动作。又如：I was then in bed, thinking of the days in my childhood. 当时我躺在床上，想起了童年的日子。They were on their way to the temple, talking and laughing. 他们说着笑着在去寺庙的路上走着。
2. It was carved in the rock and had on the outside four large stone figures, each of which was 20 metres high. 这座神庙凿在岩石上，外面有4尊大型石雕像，每尊高达20米。
Each of which was 20 metres high是一个非限制性定语从句，修饰前面的figures.这种非限制性定语从句的构造是名词+介词+关系代词来引导。如：They live in a house, the door of which opens to the north. 他们所住的房子的门是朝北的。China has hundreds of islands, the largest of which is Taiwan. 中国有上千个岛屿，其中最大的是台湾。There are around 150 teachers in our school, most of whom are women. 我们学校大约有150教师，他们中大多数是女教师。
3. The White family are on holiday in Egypt. 怀特一家人在埃及度假。集合名词family 指家庭成员时用复数：His family are all music lovers. 他一家人都喜欢音乐。若看成是一个集体时用单数：His family is a big one. 他的家是一个大家庭。
4. I dont feel like walking very much today. 今天我不太想步行。
feel like想做某事情/愿意：I feel like a cup of coffee. 或I would like a cup of coffee. 我想喝杯咖啡。还可以用这个句型表达一种提议：Do you feel like having a rest? 注意：would like 只能接名词或不定式 ，但feel like 不能接不定式。
5. Its on the edge of the lake that has been made by the Dam. 这座庙座落在由高坝形成的湖边上。
词组on the edge of 在的边缘：Dont put the glass on the edge of the table; it might fall off. 憋把玻璃杯放在桌子边上，它会掉下去的。He is on the edge of death.
6. Second, electricity can now be made from the water which rushed through the base of the dam. 第二，现在可以利用冲过坝基的急流来发电。
rush 冲、奔：When the bell rang, the children rushed out of the classroom. 铃声一响，孩子们就从教室里冲出来。
7. As a result of the dam, the water level of the lake was going to rise by 63 metres. 大坝建成的后果之一是湖水水位将升高63米。
rise 是一个有多重意思的动词，如：The sun rises in the east. 太阳从东方升起。 He always rises early. 他起床总是很早。 He rose immediately to reply. 他马上站起来回答。Prices are rising. 物价在上涨。 The wind is rising. 起风了。介词by可表示增减程度，如：He is older by five years than John. 他比John年长5岁。Production fell by about one-third. 生产下降了大约三分之一。We lost the match by one goal. 我们以一球输掉了这场比赛。
8. In all, 1700 workers and 200 other people worked on the project. 参与这项工程的工人总计达1700人，还有200名其他人员。
词组work on （从事）搭配能力很强：work on a new novel 写一本新小说；work on the wall-newspaper出黑板报；work on the project 从事这个工程；work on inventing new machines 致力发明新机器
9. First, each stone was marked with a number. 首先，每块石头都标上号码。
掌握mark的用法：①n. 分数：He got 80 marks for geography. ②v. 评分：The teacher is marking the students compositions.③n. 记号、痕迹：Who made these dirty marks on my new book? ④v. 作记号、标明：She marked her name on the book. The book was marked with her name. 这本书标有她的姓名。
10. Today you can either fly to Abu Simbel or you can take a boat from across the lake. 今天，你既可坐飞机，也可以从湖对面乘船到达阿布?拜勒神庙。
词组either or 表示两者择一：Put this dictionary either on the shelf or in the desk. 把这部字典放在书架上或放在课桌里。You may come to my office either today or tomorrow. 你可以今天或明天到我办公室来。
介词from后面往往可以再接一个介词短语：A minibus came along from behind me. 一辆中巴从我后面开过来。He took out a pair of dirty socks from under the bed. 他从床底取出一双脏袜子。