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 know you must be excited to go home after such a long business trip.
出差这么久,终于要回家了,我想你一定很高兴。
The story Sam told wasn't very funny.
萨姆的故事一点意思也沒有。
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.