Copular
a. 连接的, 系词的
🗣️ 情景例句
When's the last time you took a vacation?
上次你去度假是什么时候？
My uncle had a heart attack last year.
我的叔叔去年患了心脏病。
In the pioneering days, however, this was not the case at all.
然而，在登山运动的初期，全然不是这种情况。