Introduce before
提出,提交,呈送
🧩 词语组成解析
before
[bɪ'fɔr]
prep. 在…之前;先于，优于;当着…的面;与其…;
conj. 在…之前;在…以前;比…早些;与其…;
adv. 先前，从前;在前，在前方;
be构成一些介词+fore前面→在前面
🗣️ 情景例句
Is there a station near here?
附近有地铁站吗？
The chemist discovered a new synthetic material.
化学家发现了新的复合物质。
I started to sing. The baby watched and listened ,and she didn't cry any more.
我开始唱歌。小孩看着，听着，不再哭了。