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🧩 词语组成解析
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[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
n. 结合, 屏蔽接地, 搭接\\n[计] 压焊
🗣️ 情景例句
the minute he comes home.
他一回来。
No, thank you. But it was very kind of you to offer.
不用了，谢谢。承蒙您好意提出。
Had he worked harder, he would have gotten though the exams.
如果他努力了的话，他就会通过考试的。