一） 根据对词类的概念的理解，指出下面单词的词类：
1 deep 2 finger 3 fly 4 papers 5 pass 6 refuse 7 size 8 spoon 9 delicious 10 thick 11 town 12 map 13 myself 14 and 15 on 16 sheep 17 ship 18 mine 19 important 20 an 21 catch 22 first 23 laugh 24 third 25 leave 26 here 27 fly 28 home 29 round 30 sing 31 blind 32 but 33 eighth 34 about 35 bad 36 yours 37 child 38 against 39 ah 40 with 41 c inema 42 Tuesday 43 cheap 44 advice 45 two 46 they 47 able 48 for 49 say 50 quickly

二） 根据常见的后缀辨别下列单词的词性。
1 scientist 2 singer 3 conversation 4 beautiful 5 loudly 6 famous 7 government 8 dangerous 9 instruction 10 careful 11 lively 12 safeties 13 national 14 traditional 15 illnesses16 wonderful 17 competitions 18 information 19 successful 20 natural 21 illnesses 22 lovely 23 really 24 friendly 25 usually 26 yearly 27 advertisement 28. agricultural

三） 判断下列句子中划线单词的词性。
1. Mary dances well.
2. Think well before you act.
3. Well, I didn't think to see you here!
4. I'm not well, my head aches.
5. Water wells from a spring beneath the rock.
6. An oil well blew out in the North Sea.
7. He struck a match and lit his cigarette.
8. The wallpaper and paint match pretty well.
9. His latest film doesn't match his previous ones.

词性的分类
词类又叫词性，英语单词根据其在句子中的功用，可以分成十个大类。
1 名词 noun n. student 学生 2 代词 pronoun pron. you 你
3 形容词 adjective adj. happy 高兴的 4 副词 adverb adv. quickly 迅速地
5 动词 verb v. cut 6 数词 numeral num. three 三
7 介词 preposition prep. at 在... 8 连词 conjunction conj. and 和
9 冠词 article art. a 一个 10 感叹词 interjection interj. oh 哦
前六类叫实词，后四类叫虚词。