题目内容
16．"Can you speak English？""Of course，I have studied it ___ I was six years old．"（ ）| A． | though | B． | since | C． | before． |
分析 --你能说英语吗？
--当然了．自从六岁以来我就学习英语．
解答 答案：B 本题考查从属连词的用法．though虽然，尽管；since加时间点，时间点的时态应该是过去时，整句话应该是现在完成时，表示由于，自从…以来，；before在…之前．根据题意，I have studied it使用现在完成时，我一直在学英语，I was six years old这里的时态是一般过去时，所以应用since，意为"自从六岁以来"．结合语境可知选B．
点评 本题考查的是从属连词的辨析，应审清题意，并结合语境，从而选出正确答案．
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