题目内容
20．-Wow!You speak French so well．How did you learn it？-I learnt it listening to French news the radio．（ ）
| A． | in：on | B． | in； in | C． | by；on | D． | by；in |
分析 --你说法语太好了，你如何学习法语的？
--我是通过在收音机上听法国新闻学习的．
解答 答案：C．
结合语境可以推断这句话表达的意思是"--你说法语太好了，你如何学习法语的？--我是通过在收音机上听法国新闻学习的．"，所以第一个设空处的介词短语表达的意思是"通过"，应该用 by，第二个设空处表示"从收音机上"用on，故选C
点评 英语介词的一个特点是一词多义，并且介词间语义交叉现象很多，习惯用法也很多，有时很难从词义上区分开来．故学习中要注意不断总结，熟记一些介词和动词的固定搭配用法及习惯用法，是完成此类问题的捷径．
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