once 这边是一旦的意思
用since时,主句应该用现在完成时
she is such a computer fan that you can"t tear her away from the computer (once)she starts
she is such a computer fan that you can"t tear her away from the computer (once)she starts
为什么since不行?这里once
为什么since不行?这里once
英语人气：522 ℃时间：2019-08-20 10:53:05
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