Present perfect
初中 Junior High现在完成时
🧩 词语组成解析
🗣️ 情景例句
The bright young man can get ahead quickly in the tourist industry.
这位聪明的年轻人在旅游世界很快获得成功。
It's up to us to help those in need.
我们有责任帮助那些有困难的人。
The brain needs a continuous supply of blood.
大脑需要连续不断地供血。