题目内容：

1.Come on!You will learn what you____never_____(learn)
2.Could you tell me__________
—Centainly.In half an hour
A.when will the train leave B.when the train would leave
C.when the train left D.when the train leaves

优质解答

1,you have never learnt.
2,D,宾语从句中如果主句是一般现在或一般将来时,从句可以根据实际情况选用时态,而本句中时间状语是in half an hour,是将来时,所以选择D,同理适用于第一题,