1. your(名词性物主代词)            2. fish(复数)             3. never(反义词)         

4. can not(缩写)              5. white(反义词)                6. brush(加s 或es )        

7. make(现在分词)            8. Mr. (对应词)                9. come(反义词)          

10. ask(过去式)        

词形转换

1.possible (反义词 ) ---------------------

2.company (复数) ---------------------------

3.few (比较级)-----------------------

4.met (原形)--------------------------

5.get (现在分词 ) --------------------

6.buy (过去式)--------------------------

7.one (序数词)-----------------------------

8.happy (反义词)--------- ---------------------

9.pollute (名词 ) ---------------------------

10.cheap (同义词)---------------------------

按要求写出单词的变化形式

1.lead（过去式）__________             

2. impossible（反义词）____________     

3. perhaps（同义词）______________   

4. encourage（名词）____________     

5. cycle（名词）___________          

6.certain（副词）_____________

7. time（形容词）____________         

8. slap（现在分词）_______________

9. space（同义词）____________        

10. sell（名词）_______________