题目内容
【题目】I have learned English .
A. for six years agoB. since I was eightC. at the age of eight
【答案】B
【解析】
句意:我从八岁时就开始学英语了。A. for six years ago,for+一段时间,six years ago为时间点,结构错误;B. since I was eight自从我八岁,since+过去的时间点,用于现在完成时;C. at the age of eight,在八岁时,用于一般过去时。根据have learned可知,句子时态为现在完成时。故选B
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