-They speak perfect English．How long have they learnt it?- they were seven years old．( )A．SinceB．WhenC．AfterD．Until 题目和参考答案——青夏教育精英家教网—

题目内容

16．-They speak perfect English．How long have they learnt it？
-______ they were seven years old．（　　）

A．

Since

B．

When

C．

After

D．

Until

分析 -他们说英语说得非常的好．他们学习它多长时间了？
-自从他们7岁的时候．

解答答案：A；A．Since自从，后接一般过去时，主句用现在完成时；B．When当…时候；C．After 当…之后；D．Until直到…；根据句意-They speak perfect English．How long have they learnt it？-______ they were seven years old，可知该句为时间状语从句，根据句中信息，从句they were seven years old为一般过去时，主语How long have they learnt it为现在完成时，可知该句用Since引导，"自从．以来；表示动作从过去以来一直持续到现在，故选A．

点评连词在中考中涉及到的很多，平时学习过程中，掌握连词的意思，及所表示的关系是至关重要的，这种关系的判断可以通过句子意思的理解来选择恰到的连词．