1) Had you come here before?
以前您到过这里吗？
2) Is it all right to park here?
停在这里可以吗？
3) Since I come here.
从我到这里以来。
4) Be there a bridge there?
以前那里有桥吗?
5) Have you ever studied abroad?
你以前留过学吗？
6) Had she seen him before ?
她以前见过他吗？
参考词条