aux. 构成疑问句和否定句;代替动词;用于加强语气;
vt. 做;干;进行;从事;
vi. 表现;进展;引起;行过;
n. 社交聚会;社交活动;宴会;
🗣️ 情景例句
I'm a graduate of Harvard University.
我是哈佛大学的毕业生。
Who is speaking?I don't recognize your voice.
阁下是那一位?我听不出你的声音。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.