I live in a small town where life is quiet and relaxing. Last week, I decided to go on a trip to a big city. I had heard many good thing about it, so I was really excited. As soon as I arrived, I was surprised to see how different the city was. The skyscrapers were so tall and the streets were so crowd. I walked around the city for hours, looking at the shops and restaurants. But the most amazing thing I saw was a performance by street artist. They were painting beautiful pictures with chalks on the ground. I was so impress that I bought one of their paintings. It was a real pleasure to see such talent in the street.
解析：
1.錯誤：thing
改正：things
解析：名詞“thing”應(yīng)該使用復(fù)數(shù)形式“things”，因為前面有“many”修飾，表示多個事物。
2.錯誤：crowd
改正：crowded
解析：這里需要用形容詞“crowded”來修飾“streets”，表示街道很擁擠。原詞“crowd”是名詞，不符合句意。
3.錯誤：street artist
改正：street artists
解析：由于前面提到的是“the most amazing thing I saw was a performance”，說明表演是由多個街頭藝術(shù)家完成的，所以“artist”應(yīng)該使用復(fù)數(shù)形式“artists”。
4.錯誤：chalks
改正：chalk
解析：“chalk”作為繪畫材料時是不可數(shù)名詞，因此不需要加“s”變?yōu)閺?fù)數(shù)形式。
5.錯誤：impress
改正：impressed
解析：這里需要使用形容詞“impressed”來表達“我被他們的畫作所打動”，而不是動詞“impress”。
