题目内容
20．-Whose bike is this，Betty？-It's __________ bike．（ ）| A． | I | B． | me | C． | my | D． | mine |
分析 --贝蒂，这是谁的自行车？--它是我的．
解答 答案：C．I意思是"我"主格，作主语；me意思是"我"宾格，作宾语；my意思是"我的"所有格，形容词性物主代词，做定语，后面经常跟名词．mine意思是"我的"是名词性物主代词，相当于my+名词．根据"It's __________ bike"在空格后面有名词bike，所以在名词前面要用"我"的形容词性物主代词my，故选C．
点评 首先要掌握这几个不定代词的意思以及用法，然后结合具体的题目，就可以确定正确答案．
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