英语34.I didn’t know when they________ again.34.I didn’t know when they________ again.A.came B.were coming C.had come D.had been coming为什么
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![英语34.I didn’t know when they________ again.34.I didn’t know when they________ again.A.came B.were coming C.had come D.had been coming为什么](/uploads/image/z/5471790-6-0.jpg?t=%E8%8B%B1%E8%AF%AD34.I+didn%E2%80%99t+know+when+they________+again.34.I+didn%E2%80%99t+know+when+they________+again.A.came+B.were+coming+C.had+come+D.had+been+coming%E4%B8%BA%E4%BB%80%E4%B9%88)
英语34.I didn’t know when they________ again.34.I didn’t know when they________ again.A.came B.were coming C.had come D.had been coming为什么
英语34.I didn’t know when they________ again.
34.I didn’t know when they________ again.
A.came B.were coming C.had come D.had been coming
为什么
英语34.I didn’t know when they________ again.34.I didn’t know when they________ again.A.came B.were coming C.had come D.had been coming为什么
B
come这个短暂性动词的现在分词可以表示将来.
这里的were coming=were goint to come.
(我不知道他们什么时候会再来的)
“再来”是相对"知道"之后的,所以用过去将来时.