（湖南省怀化市2014年高三第二次模拟考试）22. Tom, you play the violin so well. But I ______ you can play the violin.
A．didn’t know
B．don’t know
C．hadn’t known
D．haven’t known
答案：A
句义：Tom，你的小提琴拉得真好。我还不知道你会拉小提琴呢！根据句义可知说话的时候已经知道对方的小提琴拉得很好了，不知道对方会拉小提琴是过去的事情。故使用一般过去时。故A正确。
【试题延伸】英语中的时态主要由动词的形式决定，因此在学习英语时态时，要注意分析动词形式及具体语境，想象在那个特定的时间动作所发生的背景，这个动作是经常性动作、一般性动作、进行性动作、完成性动作还是将要发生的动作。
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| It's seven in the morning. After 1 , Mr and Mrs White 2 their children to school 3 the car. Then they go to work in a 4 . The children have lunch at school. Father and mother have lunch at the factory. There 5 four classes in the morning and two in the afternoon. After 6 , the children play games for some time. Sometimes the children 7 the classroom with their classmates. Then they go home by school bus. Mother cooks supper for the 8 .The children help their mother do the housework. After supper the children do 9 . Father and mother watch TV or 10 . | |||||
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