15. surround v. 環繞;圍繞;包圍 surroundings n. 復數 周圍的環境

　　Tall trees surround the lake.

　　The lake is surrounded with /by tall trees.

　　The police surrounded the house./The house was surrounded with the police.

　　With the mountains __surrounding____the village, it is not easy for villagers to go to town to buy things.

　　___Surrounded_____by the students, the teacher explained the problems patiently.

　　16. harmony n. 調和,一致;和諧 in harmony 和睦地;和諧地harmonious adj 和諧的

　　be in harmony with 和……一致，和諧

　　be out of harmony with 與……不一致

　　live/work in (perfect) harmony 一起生活，工作得(十分)融洽

　　人類應該和大自然和諧相處。 Human beings should live in (perfect) harmony with nature.

　　他們之間不和諧， 經常吵架。 They are out of harmony with each other. They often quarrel.

　　他們一起工作十分融洽。 They work in perfect harmony.

　　17. In this perfect world lived people who had discovered how to stay young forever.

　　(1)完全倒裝句: 表示位置，位移的副詞及介詞短語充當的狀語位于句首;

　　在以here, there, out, up, down, away, now 等副詞位于句首而且主語是名詞時，用倒裝

　　From the window came the sound of music. The sound of music came from the window(正常語序)

　　一位老人坐在樹下。 Under a tree sat an old man。

　　There comes the bus.____車來了__________

　　門口站著一個小男孩。Standing at the gate is a little boy

　　(2) perfect: adj. 完美的， 極好的 be perfect in 精通……

　　Nobody is perfect. 人無完人。 熟能生巧。Practice makes perfect

　　18. form v. 形成;組成;構成;養成

　　form sth (from) form the habit of 養成……習慣

　　n. form 形式;外形;格式，表格

　　in the form of 以 ……形式

　　這個女孩養成飯前洗手的好習慣。The girl formed the habit of washing hands before meals. 這個集訓是以講座的形式。The training is in the form of lectures.

　　19. be covered with 被 覆蓋 cover v.

　　(1)報道,采訪 The journalist is covering the Olympic Games in Beijing.

　　(2)走完(一段路程)The Red Army covered 25,000 li on their Long March.

　　(3)占有(多少面積) The city covers an area of ten square miles.

　　(4)足以支付，夠付 Will 10,000 dollars cover the bill?