I have never heard this song ( ) over the radio.
问题描述:
I have never heard this song ( ) over the radio.
a.has taught
b.taught
c.is teaching
d.was been taught
答
从语法分析,不用看句子意思就能选出答案B主句句子干:主语I 谓语实义动词heard 宾语this song.句子成分完整.所以只能添加状语或者定语等修饰成分.不能再出现没有连词而独立存在的谓语形式.taught过去分词,做宾语补足...