她以前来过中国吗 She had previously been in China
以前来过中国吗
Have you ever been to China before
以上为机器翻译结果，长、整句建议使用 人工翻译 。
晚上好！您以前来过中国吗？
Kelsi: Good evening! Have you ever been to China before?
youdao
他们以前来过中国吗？
Have they been to China before?
你以前来过中国吗？
Have you been to China before?
应用推荐
模块上移
模块下移
不移动