Prefading
预调节
🗣️ 情景例句
Somebody else'll buy it by then.
别人也许买走了。
How long have you studied English?
你学英语多久了？
Mr. Fang is in London. He's looking for different places. He needs some help.
方先生在伦敦。他在寻找一些地方，他需要帮助。