You should say

　　where you went

　　when and why you went there

　　what landscapes you saw

　　and explain why this was such an unforgettable trip.

　　One journey I went on that was very long indeed was my trip around Europe last summer, travelling by train.

　　I went for a whole month, going all around Europe from my home country of England east until I got to Eastern Europe, and then back in a loop to Italy. I went so I could see the rich history and culture of the continent, which was practically on my doorstep. I felt it was high time I embarked on a long trip to experience some more of the world and its people.

　　Travelling by train I kept myself occupied by looking out of the window at the landscapes as they flashed by. The countryside was mostly fields, but once I got to the Alps then it became beautiful. There were towering cliffs of rocks with fast-flowing rivers cutting between valley walls. I could even see a castle on one of the hillsides. Each city I visited brought a new style of architecture and type of person on the street. I saw medieval cottages, baroque cathedrals and shabby, modern apartment blocks. The landscape varied with each country I came to.

　　I’ll never forget this trip because it was the first time I was travelling without a home base. I went with a good friend and we spent a lot of time together. We had memorable conversations on the long train journeys about live, society, religion... all very deep stuff. I also had the chance to see some of the world’s most famous sights like the Eiffel Tower and the Dom cathedral in Cologne. It was fascinating waking up on a moving train knowing that the next stop I got off at was going to present me with a whole new country with many surprises. It was a unique experience.

　　Lexical resource 詞匯

　　all around: 到處

　　in a loop: 繞一圈

　　continent: 洲

　　doorstep: 門口

　　embarked: 進行

　　hillsides: 山腰

　　style of architecture: 建筑風格

　　medieval cottages: 中世紀風格的小屋

　　baroque cathedrals: 巴洛克風格的教堂

　　home base: 本壘 大本營

        occupied: 被占據(jù)

　　flashed by: 飛過

　　the Alps: 阿爾卑斯山脈

　　towering cliffs: 高聳的懸崖

　　fast-flowing rivers: 急流的河

　　Eiffel Tower: 柏林大教堂

　　fascinating: 迷人的

　　unique: 奇特的