Ⅱ.Word study: Observe how the following words are changed, and decide whether the underlined words are noun or adjective in the sentences.
1. America + an = American
e.g. The 1990 Nobel Prize in Physiology or Medicine was won by two Americans. (noun/ adjective)
2. Russia + an = Russian
e.g. Irene has made friends with several Russian (noun/adjective) girls since she started her university life in Russia (noun/adjective) last month.
3. Italy + ian = Italian
e.g. Leonardo da Vinci was an Italian (noun/adjective) painter, inventor, musician, engineer and scientist.
4. Canada + ian = Canadian
e.g. The official languages of Canada (noun/adjective) is French (noun/adjective) and English (noun/adjective).
5. China + ese = Chinese
e.g. Scientists believe there are now nearly 2,000 giant pandas living in the wild in China (noun/adjective).
The Chinese (noun/adjective) government has made great efforts in protecting giant pandas.

1. noun 2. adjective, noun 3. adjective
4. noun, noun, noun 5. noun, adjective

【分析】首先明确名词和形容词的核心用法：名词可指代人、事物、地点等，在句中可作主语、宾语等；形容词用于修饰名词，作定语等。解题时需结合划线词在句中的作用判断词性：1. 划线词Americans指代人，作宾语；2. 第一个Russian修饰名词girls，第二个Russia指代地点；3. Italian修饰职业名词；4. Canada指代地点，French、English指代语言；5. China指代地点，Chinese修饰名词government。
【解析】1. 句中划线词Americans意为“美国人”，表示人，在句中作宾语，属于名词，故为noun。
2. 第一个划线词Russian修饰名词girls，起修饰作用，是形容词；第二个划线词Russia意为“俄罗斯”，是地点名词，故分别为adjective、noun。
3. 划线词Italian修饰后面的职业名词，作定语，是形容词，故为adjective。
4. 第一个划线词Canada是地点名词，第二个French、第三个English是语言名词，故分别为noun、noun、noun。
5. 第一个划线词China是地点名词；第二个划线词Chinese修饰名词government，作定语，是形容词，故分别为noun、adjective。
【答案】1. noun 2. adjective, noun 3. adjective 4. noun, noun, noun 5. noun, adjective
【知识点】英语词性辨析，英语名词用法，英语形容词用法
【点评】本题围绕国名相关词汇的词性判断展开，考查名词和形容词的基本功能，属于英语基础知识点应用，难度较低，学生掌握词性基本用法即可解答。
【难度系数】0.7