Gradability
可分等级性
🗣️ 情景例句
which has been vacant for over a year now,
已空了一年多，
How long have you been studying English?
你学英语多久了？
That's all right. Why don't you call me Robert or Bob? But please don't call me Mr. Bob.
没关系。你为什么不叫我罗伯特或鲍勃？但请不要叫我鲍勃先生。